Hi, don't know about prostitcher upgrades. I'm located in Queenstown, MD. Haven't figured out shipping yet but pick up would be easy if you're in the area.
Regards,
Kathy
Barely used Baby Lock Coronet for sale. Moving and need to sell. $2500. Includes: 5' frame, built-in stitch regulator, bobbin winder and all accessories. Low stitch hours.