I'm having trouble with my machine. please watch the short video. Problem I'm having is happening at 14sec in the video. I'm running mach3 and using nema 23 570's, and a nema 34 for the Z. all axes have roton ball screws with .1265 oversized balls. The machine was built with Hoss's plans........ Motor velocity is at 120 and accel is at 4 for all axes.
https://www.youtube.com/watch?v=270ArRpv_0w