Been having ongoing problem with stepper motors on x and y axis intermittently stalling and then restarting causing machine to loose position. At first thought it was bad connection on gecko drive plugs, changed plugs did not fix problem. Had energy dump circuits on each drive thought maybe that was problem removed them, their not needed, did not fix problem. Had a optical isolated on usb to kflop, removed that. Ran machine for 7 hours yesterday stepper motors did not stall but after 7 hours had a Read Failed error and Auto Disconnect, started machine over ran for another hour no problem. Started machine today ran a 10 minute warm up program then went to machine a part, half way through got the Read Fail error, restarted everything got the error a second time. Restarted everything again machine ran for over an hour with no problem. This Read Failed error makes the machine unreliable and loosing position makes the machine useless. Anyone know what causes the Read Failed error.