I know this is going to sound like blasphemy but the Bernina Record 930 has way too many plastic gears in it. 4 at least, that I can see. Plus the hand wheel and it's parts are plastic. Yuck. There's also a bunch of little pieces in the linkage and controls that are plastic too.
Nice machine but I'd never pay the prices I've seen after having the top off of this one.
Anywho, here's a question.
Would it hurt to put some Tri-Flow grease on the plastic gears?
There is traces of old grease on them already, so I know they've been greased at least once.
When I cleaned and serviced this machine early last year I think I missed about half the oil spots on it. Either that or they mated and spawned more.
Joe