When I balance a prop, I do it by removing material from the front face of the heavy blade out near the tip. I remove material from behind the high point of the airfoil. I use sand paper of whatever grit seems needed. APC's are generally balanced or pretty close, and little material needs to be removed. I did get a couple of 11 x 5's some years ago which were way off. One blade was obviously thicker than the other. I had to reshape the heavy blade to get them to balance. It has been posted on another forum that there have been APC's with the shaft hole off center, but I have not seen one. I run mostly APC's.

There are other ways of going about it which are fine. For example, if you paint your prop tips, just put more paint on the light tip.

Jim