jerky movements arrow 750

[chaz6966]

does anyone have any idea how to get rid of the jerking movements while trying to contour.
1994 arrow ct control.
g105 doesnt change anything

[GCMAN]

Chaz, I just responded to your other post on a retrofit. We had the same issue plus many other maintainance issues. We could not stop the "bumping".The machine would almost seem to walk across the floor cause it was so bad. The tech said something about the processer could not process fast enough which caused the bumping. With our MachineMate retro,
all those issues were solved plus we were able to increase our speeds and feeds 60 to 70%. Good luck in finding a good retrofit.
GC