Joint following errors are to be expected before the system is tuned
Usually you must first widen the ferror and min_ ferror limits in the ini file
to about an inch so you can see whats happening when you enable the drives
You may in fact have the feedback backwards so the drive runs-away as soon as enabled
(you have about a 50% chance of this on a new retrofit)
In any case you will need to widen the ferror limits to see whats going on