Tim I struggled along for some years with a couple of old Dremels always fiddling with them mixing matching pieces. Giving up I decided to sent the best set of pieces to Dremel service in Palm Springs which is apparently run by the son of old man Dremel. The only note beside my contact info was just "help".

Took almost two months and I'd kinda forgot but in a new package in the mail one day was a brand new latest model no charge.

John