Keep in mind what Doc is trying to say is with the balls out of box. You can sand or polish or alter surface and see one ball which shouldn't be stronger than the other appear that way. Layout can also dictate ball reaction. Doc is solid with his advice but if you see it in your center as different, there are a number of variables that could be the reason
Bill Daley
Better Bowling Concepts
Ebonite Amateur Staff
Turbo Grips Staff
Norwich, Conn.