RE: Top Flite Power Point prop balancer
I just saw this reply on another site I posted this on (rcgroups.com). Will have to give it a try:
Yes, just the hole on the back side where the sleeves go in is centered on these APC props. When you use the balancer, put the tapered bushing in that side, and use the FLAT side of the other bushing on the front of the prop. This should hold it centered on the shaft for proper balancing.