Sounds like we are on the same page. I did a prop today without any sanding. It is a nice looking well finished prop but not an expensive one. I put it on the balancer and found where it came to rest. I marked a vertical line that radiated out from the hole toward the cieling on the prop face under where the hub goes. That marked the light side. Just like the video I posted. I put a hole that just fit my solder 80% through the hub area of the prop. It will be hidden by the propwasher. I cut and tried my solder until I got it right. I put it in the hole and tapped it inside. A drop of CA sealed the deal.

The prop I played with yesterday does have different pitch a the tips, possibly 5-degrees. It runs smooth but not perfect.

I am thinking the business about gas engines being "shakers" might have to do with props sometimes. Being a sport flyer, and a cheap-skate I buy cheap props. My engines shake. The 3D guys run simmilar engines but they are butter smooth. They run expensive props and probably know how to balance them. I think I just improved my game.