Taig jams when rapid traveling

I have had an intermittent problem with my taig jamming while rapid traveling. I used to be able to rapid at 20 ipm but have slowed down to 15 and now just 12, yet I still ruin parts and break mill tools due to the problem. Oddly, I can jog at 30 ipm with all three axis simultaneously. That makes me wonder if Mach 3 doesn’t use the motor acceleration when rapid moving? At any rate, I have tinkered with the gibs repeatedly in a fruitless effort to address the problem, and now have them where I can just feel a little friction when turning the leadscrews by hand with the stepper motors removed. When it jams the motor still turns some, albeit slowly while making a squealing sound. Helping the motor by hand unjams it, allowing it to turn normally… It’s not always the same axis that jams either. Any clues?

Thanks,
John
:drowning: