So I have an X Carve from Inventables and I got everything running right! I am trying to use Universal Gcode Sender to send code to my Arduino/Gshield. Every time I reset zero it seems that my measurements change, for example before I reset 1" is 1" but after I reset zero 1" seems more like 1/4". I hope the problem makes sense! Also sometimes when I reset zero in one location and then ask it to return to zero, the position is in a totally different position. Does anyone know what Im doing wrong?