I finally got 2 new servo drives for my 4020,but am having trouble with cold start.I jog all axis to the markers then enter cs.My marker for the y is all the way at the end of the way closest to the operator,not near the middle of the way like the 4020 I used to run.So when I jog the y in a negitve direction I get 10.09 inches and it stopps like it hit a software limit.