I would NEVER remove a lot of material from any part of a prop. And I would NEVER remove ANY material from a hub. One thing about DRdrivers post--spraying something onto the prop will cause a build-up of material on the surface of the prop (this is what the intended purpose is). Build-up on the surface of the prop will change the airfoil of the prop--thereby reducing it's efficiency. Creating more drag on one end of the prop and not the other will cause the same effect on an engine as an out of balance prop would--wear and tear on the bearings and or bushings. I like to follow Minn flyers advice--just put the prop on there and fly. The only thing I do occasionally is to lightly sand the sharp edge off of the TE of the prop--especially on MAS, they seem to be the worst about leaving sharp bits of plastic on the TE.