Is there much difference between a Oster Regency Kitchen Center Model number 970-06A or any other 900 series and Model number 972-08H? My 10 speed 972-08H model may need a new belt, and if I have to get a new motor base in the 900 series, would the mixer arm that I already have work with any 900 series? Would other attachments work too? Would a 12 speed base work with a mixer arm that came with a ten speed model work also, or are the gears in the mixing arm specific to the speed the motor base it comes with?

Food Mixers - Oster