I've got a Yamaha double pedal from around the late 80's, that have felt beater on them. I want to replace them with a hard plastic beater. I tried the standard DW beaters that I have on the Yamaha pedals, and they didn't insert. Turns out the Yamaha beaters have one side of the shaft flattened, while the DW's are fully round in the shaft so they didn't fit. Does anyone make beater shafts with a flat side? What are my options?