Spinner fit
Matt...can't get an aluminum spinner out of balance?
Have you ever run a CB Associates spinner?
They take vibration to a new level. Junk.
It's either a Tru-Turn, or use the nut supplied with the motor. Those are the options the way I see it, and NO you won't have much luck accurately balancing a plastic spinner no matter how hard you try. They're garbage too.
'Race