Is there a quick way to find the heavy side of the pop by using a screwdriver or some other tool easily available. I have never used prop balancers. I'm going to switch from the Master Airscrew to an APC 14x6. You cant even get a spinner to work with the MA there isn't any shaft left for the nuts when the spinner backplate goes on the prop hub is so thick. It did look like the MA's tips were moveing forward and backward a hair on 5k RPM's, I just thought it was because the engine was loading up.