diff --git a/hardware/intval3.scad b/hardware/intval3.scad
index b74a625..8bf5138 100644
--- a/hardware/intval3.scad
+++ b/hardware/intval3.scad
@@ -47,7 +47,6 @@ module exploded_view () {
 //rotate([0, 0, 13]) intval_laser_panel_cover();
 //rotate([0, 180, 0]) key_cap();
 //geared_motor_mount_120();
-//motor_key();
 //motor_key_120();
 //plunger_plate();
 //plunger();
@@ -56,10 +55,10 @@ module exploded_view () {
 //rotate([0, 180, 0]) motor_cap_120(false);
 //translate([0, 0, 39 / 2 + 5.75]) bolt_guide();
 //motor_key_120_reinforced();
-//motor_key_120_reinforced_roller();
+motor_key_120_reinforced_roller();
 //intval_laser_standoffs_alt();
 //intval_laser_standoffs_plate_alt();
 
-exploded_view();
+//exploded_view();
 //stl_plate();
 //dxf_plate();
\ No newline at end of file
diff --git a/hardware/mount.scad b/hardware/mount.scad
index ffd8505..4fd6c24 100644
--- a/hardware/mount.scad
+++ b/hardware/mount.scad
@@ -68,6 +68,10 @@ module motor_key_120_reinforced () {
             cylinder(r = 16 / 2, h = 25, center = true);
             translate([0, 0, 10]) cube([20, 12, 5], center = true);
             translate([0, 0, 10]) cube([12, 20, 5], center = true);
+            translate([-(12 / 2) - (4 / 2), -(12 / 2) - (4 / 2), 10]) difference () {
+		    	cube([4, 4, 5], center = true);
+		    	rotate([0, 0, -45]) translate([0, -4, 0]) cube([8, 8, 5 + 1], center = true);
+		    }
         }
     } 
 }
@@ -79,6 +83,10 @@ module motor_key_120_reinforced_roller () {
             cylinder(r = 16 / 2, h = 25, center = true);
             translate([0, 0, 10]) cube([20.2, 12.2, 5.1], center = true);
             translate([0, 0, 10]) cube([12.2, 20.2, 5.1], center = true);
+            translate([-(12 / 2) - (4 / 2), -(12 / 2) - (4 / 2), 10]) difference () {
+		    	cube([4, 4, 5], center = true);
+		    	rotate([0, 0, -45]) translate([0, -4.2, 0]) cube([8, 8, 5 + 1], center = true);
+		    }
             hobbled_rod_120(40);
             //nut
             translate([5, 0, 0]) cube([2.5, 5.25, 42], center = true);