Hey Saito owners!
I've purchased a Saito FA72 for the Kadet Senior my son and I are building, but am having trouble finding a spinner that will fit. The bolts on the rear side of the backplate (dubro 2" and the 2 1/4") are set too narrow for the backplate to fit flush against the "toothed" round spinner on the motor (highly technical here

). What spinners have you guys used?
Thanks!