thinking of buying a new bowl, and having a different drilling on this one. my question is would it be better to have one of my lesser used ball re-drilled or get a new ball to try out a different layout
It completely depends on what you are trying to accomplish. If you can make one of your current pieces fit that reaction with a redrill...then go that route. If one of your current pieces won't fit the reaction you are looking for...then a new piece would be the route.