RE: Replacement gears for S9304
Look on Futaba's site for the servo charts. Find a current servo that is the same size andclose In/oz specs as your 9304. Then look at the gear set for it. Chances are good that it is the same set. I fly a lot digitals, but I've found that the gear set for them is the same for a number of older servos. I wouldn't try to use a set that I didn't know was formy servo. The experment isn't worth a plane.
Don