Well another day of machine frustration. Did some bangin around with a rubber mallet. No luck. Checked what limit switches I could find. Not sure where they all are. How would I add more dwell in the tool change macro? I am pretty handy with computer stuff so if I knew what value to change I will give it a try. Also here is something I noticed. When the machine hangs, I can rotate the spindle freely. I know from experience that when I do an M19, the spindle is locked in its oriented position. Could the issue be here? Spock, let me know what the repairman says. Thanks.