I am going to try the driller at the shop I bowl at. I don't like the grips in my Fire Road, so I'll have him order in the ones I like and put them in. I'll also order a new spare balk from him. That should be a good test. I use Semi Fingertip grips two handing, so I want to put semis in my spare ball, but I want a thumb hole in it if I want to throw my spares on handed. So he has to get the span correct for semi fingertip.