Quoted from tadowhere:
I just tried major havoc and didn't see any issues. I don't think groovy has settings that can be changed.
If you do the usb mod. You can change the spinner sensitivity and speed in the mame menu. To dial it in exactly how you want.
I did this to fix the trackball on my centipede.
Adjusted for the stock ball to work perfectly.
No stutter on crystal castles. Now centipedes speed and screen travel is also now as it should be.