I was in the process of cutting a nest that I created. The holes in the program were causing a little slag buildup and were causing the program to stop. As I was cleaning the ohmic cap of any slag buildup the program moved. when I was done cleaning the cap, I went back to the point that I moved from and the program was in a different location. I decided to go back to my program zero point and dry run the program to my spot to start from. When the torch stopped at my program zero point I noticed it had moved over in the x direction a few inches. This is a very big problem as I was about 5 pieces into my nest and now I am not able to start at where I need to. Basically this plate is not usable for this program at the moment unless there is a way to get back to the original program zero. This is a plate of 1/2" that is 6' x 8' that I started to use. The cuts are at different points on the plate. It seems when we get one problem solved another shows up. What can I do to fix this?