I trashed spinner on mine, got me a du-bro spinner nut. Looks like a mini spinner, works like a prop nut, balanced right out of the package and it works with an electric starter. I tried balancing my spinner as well, but while it balanced out on the prop balancer, I noticed a little bit of off-center rotation, so it might not be dynamically blanced... either way, the prop nut is a LOT easier to get on and off.

Andy