diff --git a/Hardware/XZ_axis/motor_gear.scad b/Hardware/XZ_axis/motor_gear.scad
index 50e177b..29157c5 100644
--- a/Hardware/XZ_axis/motor_gear.scad
+++ b/Hardware/XZ_axis/motor_gear.scad
@@ -38,7 +38,7 @@ include <MCAD/teardrop.scad>
 include <MCAD/involute_gears.scad>
 
 motor_shaft_diameter=5.4;
-pos=15.4; //position hole for grubnut
+pos=15.4-1; //position hole for grubnut
 nholes = 7;
 shaft_diam=10;
 shaft_height=7;