quote:Darn, I guess all those balls I drilled in the 50's and 60's with the cg in different places all over the ball with an X-hole to make legal was just my imagination. Best all around one we had was cg on PAP with a 9" hole. Another for slicker lanes was cg on PAP and x-hole on PAP. Another was cg on NAP with x-hole on NAP. We sometimes had to guess at static weights for legal only. We didn't pay too much attention to static weights for reaction, just cover and cg placement. Even rubber acted different to polishes and sanding.