Hi there vintage bike enthusiasts! I’m having a heck of a time finding crank bearings for this 1970s era Sears 3-Speed. It’s a ladies model made in Austria. The bearings are 1/4” balls and there’s 9 of them in the cage. There’s plenty available that meet the 1/4”x9 criteria but they’re way too small and other bearings sold for Sears 3 speeds are too big. I was hoping someone could give me a lead on a source for the bearings.