I can calibrate my machine to 42 inches which is a longer run than I need it to ever run. And it calibrates perfectly. but when I run a cut file and it returns back home the x returns back home anywhere fro 1/8 to 3/8 past the zero point. During the cut file each part starts and stops at the same point and there arent any visable slips or missed steps. I have read others having this issue on pp3 and older machines but have yet to read an answer. The issue really becomes a huge problem when I have to run 2 cut files, the first one I run is a milling file. Then since the milling is a ling file the x axis normally returns back to the zero point about 3/8 of an inch past. Then when I load the perimeter cut file I put the bit back a the original start point ( the start point before any cutting has been done). and the entire file is off in relationship to the first cut file.