diff --git a/rack/connector/connectors.scad b/rack/connector/connectors.scad
index c3b3888..e3dc915 100644
--- a/rack/connector/connectors.scad
+++ b/rack/connector/connectors.scad
@@ -66,8 +66,6 @@ module connectorPositive(on, to) {
     onYBarToXBarPositive();
   } else if (on == "yBar" && to == "basePlate") {
     onYBarBasePlateConnectorPositive();
-  } else if (on == "xBar" && to == "yBar") {
-    onXBarToYBarPositive();
   } else if (on == "mainRail" && to == "yBar") {
     onMainRailYBarConnectorPositive();
   }
diff --git a/rack/connector/xBarYBarConnectors.scad b/rack/connector/xBarYBarConnectors.scad
index fc95387..46d7369 100644
--- a/rack/connector/xBarYBarConnectors.scad
+++ b/rack/connector/xBarYBarConnectors.scad
@@ -35,22 +35,6 @@ module onXBarToYBarNegative() {
   translate(v = [-xBarSideThickness, y, z])
   rotate(a = [0, -90, 0])
   counterSunkHead_N(rackFrameScrewType, screwExtension=inf10, headExtension=inf10);
-
-  // lugs for snap fit and hold in place
-  translate(v=[-0.1,3,13.5])
-  lug();
-
-  translate(v=[-0.1,26,13.5])
-  lug();
-}
-
-module onXBarToYBarPositive() {
-  // lugs for snap fit and hold in place
-  translate(v=[-0.1,3,2])
-  lug();
-
-  translate(v=[-0.1,26,2])
-  lug();
 }
 
 
@@ -62,13 +46,6 @@ module onYBarToXBarNegative() {
   rotate(a = [180, 0, 0])
   rotate(a = [0, 90, 0])
   hexNutPocket_N("m3", openSide=false, backSpace=5);
-
-  // lugs for snap fit and hold in place
-  translate(v=[-0.1,3,2])
-  lug();
-
-  translate(v=[-0.1,26,2])
-  lug();
 }
 
 module onYBarToXBarPositive() {
@@ -87,26 +64,8 @@ module onYBarToXBarPositive() {
       backFaceLength = 5,
       backFaceScale = 1.2
   );
-
-  // lugs for snap fit and hold in place
-  translate(v=[-0.1,3,13.5])
-  lug();
-
-  translate(v=[-0.1,26,13.5])
-  lug();
 }
 
 
 xBarConnectorToYBarConnectorTrans = mirror(v=[1,0,0]);
 yBarConnectorToXBarConnectorTrans = mirror(v=[-1,0,0]);
-
-
-
-module lug() {
-  hull() {
-    sphere(r=0.5);
-
-    translate(v=[0,2,0])
-    sphere(r=0.5);
-  }
-}
\ No newline at end of file
diff --git a/rack/print/eval_P.scad b/rack/print/eval_P.scad
index f6c6fcf..a86ed3e 100644
--- a/rack/print/eval_P.scad
+++ b/rack/print/eval_P.scad
@@ -2,8 +2,8 @@ include <../xBar.scad>
 include <../yBar.scad>
 include <../mainRail.scad>
 
-
-// Evaluation print for slack config
+// Evaluation print for slack config, please see slack.scad
+// to configure tolerances
 
 intersection() {
   yBar();
@@ -14,16 +14,15 @@ translate(v=[35,0,0])
 intersection() {
     translate(v=[0,-xBarX + xBarSideThickness + 5,0])
     xBar();
-
     halfspace(vpos=[0,1,0], p=[0,0,0]);
   }
 
-translate(v=[60,20,0])
+translate(v=[35,18,0])
 rotate(a=[0,0,90])
 intersection() {
+  mirror(v=[0,1,0])
   multmatrix(mainRailPrintOrientation)
   mainRail();
-
   halfspace(vpos=[-1,0,0], p=[19,0,0]);
 
   mainRailPrintOrientation = [
diff --git a/rbuild.py b/rbuild.py
index cf919f4..06033e5 100644
--- a/rbuild.py
+++ b/rbuild.py
@@ -4,6 +4,7 @@ import argparse
 import subprocess
 import os
 import sys
+from stl import mesh, stl
 
 
 # For actual dimensions, please see profiles.scad.
@@ -82,7 +83,10 @@ def run_build(build_var, config_var):
 
 def build_single(build_dir, target_dir, filename, config):
     print('Building:', filename, 'from', build_dir, 'to', target_dir)
-    run_openscad(construct_openscad_args(build_dir, target_dir, filename, config))
+    openscad_args = construct_openscad_args(build_dir, target_dir, filename, config)
+    run_openscad(openscad_args)
+
+    convert_text_stl_to_binary(openscad_args[1])
 
 
 def construct_openscad_args(build_dir, target_dir, filename, config):
@@ -128,6 +132,15 @@ def run_openscad(options=['-h']):
               '(Currently need Linux for this)')
 
 
+def convert_text_stl_to_binary(file_path):
+    mesh_data = mesh.Mesh.from_file(file_path)
+
+    # Remove the original file
+    os.remove(file_path)
+
+    mesh_data.save(file_path, mode=stl.Mode.BINARY)
+
+
 def assert_os():
     if sys.platform == 'linux':
         return True
diff --git a/stl/rack-mount/dualLBracketSupportRail_P1.stl b/stl/rack-mount/dualLBracketSupportRail_P1.stl
index 9c2a025..b2bf1fa 100644
Binary files a/stl/rack-mount/dualLBracketSupportRail_P1.stl and b/stl/rack-mount/dualLBracketSupportRail_P1.stl differ
diff --git a/stl/rack-mount/dualLBracketSupportRail_P2.stl b/stl/rack-mount/dualLBracketSupportRail_P2.stl
index 6eb5586..ea54941 100644
Binary files a/stl/rack-mount/dualLBracketSupportRail_P2.stl and b/stl/rack-mount/dualLBracketSupportRail_P2.stl differ
diff --git a/stl/rack/eval_P.stl b/stl/rack/eval_P.stl
index 9bd4643..ac366de 100644
Binary files a/stl/rack/eval_P.stl and b/stl/rack/eval_P.stl differ
diff --git a/stl/rack/hingeModule_P1.stl b/stl/rack/hingeModule_P1.stl
index 0034b6a..c1c9e46 100644
Binary files a/stl/rack/hingeModule_P1.stl and b/stl/rack/hingeModule_P1.stl differ
diff --git a/stl/rack/magnetModule_P1.stl b/stl/rack/magnetModule_P1.stl
index 73bdbe1..c42437b 100644
Binary files a/stl/rack/magnetModule_P1.stl and b/stl/rack/magnetModule_P1.stl differ
diff --git a/stl/rack/magnetModule_P2.stl b/stl/rack/magnetModule_P2.stl
index baa0029..85941b5 100644
Binary files a/stl/rack/magnetModule_P2.stl and b/stl/rack/magnetModule_P2.stl differ
diff --git a/stl/rack/mainRail_P.stl b/stl/rack/mainRail_P.stl
index 7c93653..88cbf92 100644
Binary files a/stl/rack/mainRail_P.stl and b/stl/rack/mainRail_P.stl differ
diff --git a/stl/rack/sideWallLeft_P.stl b/stl/rack/sideWallLeft_P.stl
index 045b93a..f5a2b92 100644
Binary files a/stl/rack/sideWallLeft_P.stl and b/stl/rack/sideWallLeft_P.stl differ
diff --git a/stl/rack/sideWallRight_P.stl b/stl/rack/sideWallRight_P.stl
index a260e65..31864d8 100644
Binary files a/stl/rack/sideWallRight_P.stl and b/stl/rack/sideWallRight_P.stl differ
diff --git a/stl/rack/stackConnectorBottom_P.stl b/stl/rack/stackConnectorBottom_P.stl
index 855a71c..9685fcb 100644
Binary files a/stl/rack/stackConnectorBottom_P.stl and b/stl/rack/stackConnectorBottom_P.stl differ
diff --git a/stl/rack/stackConnectorDual_P.stl b/stl/rack/stackConnectorDual_P.stl
index f022a09..a525ec5 100644
Binary files a/stl/rack/stackConnectorDual_P.stl and b/stl/rack/stackConnectorDual_P.stl differ
diff --git a/stl/rack/xBar_P.stl b/stl/rack/xBar_P.stl
index 9e3fc56..117191a 100644
Binary files a/stl/rack/xBar_P.stl and b/stl/rack/xBar_P.stl differ
diff --git a/stl/rack/xyPlate_P.stl b/stl/rack/xyPlate_P.stl
index ededef1..9c64ef0 100644
Binary files a/stl/rack/xyPlate_P.stl and b/stl/rack/xyPlate_P.stl differ
diff --git a/stl/rack/yBar_P.stl b/stl/rack/yBar_P.stl
index cf477cd..82cc97f 100644
Binary files a/stl/rack/yBar_P.stl and b/stl/rack/yBar_P.stl differ