Hi, I wanted to reach out and see if you guys know what is happening with my graphtec plotter. It seems to be slipping on the left side of my push roller, like if it is not gripping enough. There is nothing wrong with the pressure on them and as well with the grip rollers. In the picture I have its suppose to be cutting within the black but it slides off and cuts wrong. Do you have any clues to why that is. As of right now I only have 3 push rollers on the machine and doing perf cuts. Thanks!