We have a MG103 and are having some weird problems. It seems to be losing home when it goes to cut more than one pass, we were cnc some 1" HDPE and each pass would be off .062 so you would get a part with a bunch of steps on it. We have tried resetting home and that does not work. I talked to multicam, but not much help. The problem started on just the X axis but now has moved to both the x and y. This problem started a while back and seemed to be heat related. We have been running the machine with the controller door open and a fan on it. That helped for a while but now it does not. We examined the control box for any thing that looks like its getting hot but did not see anything. We are just looking for a direction we don't want to just start replacing parts and guessing. Thanks Tom