You said you're at 0 side and finger? I wonder how much thumb? How deep did you go with the holes. You may have to redrill it because it doesnt sound like you had a lot of top weight to begin with. I was going to tell you to bury the fingers a bit more to raise the diff but without measuring it myself I dont want to give you any definite information if I can't visually weight it. I say that because I just dealt with a gentleman who claimed his IQ went 60 ft, weighed it, and found out he was at 0. We ended up plugging it and drilling it pin under and even then he didnt have a lot of side but the ball rolled better. My definite would be to play with the surface and bury the fingers a bit more. See if that helps, if not, then you might have to consider plugging the ball. Just my .02.