Hey Scott. I forget the place, but there used to be a guy about 40-45 minutes outside of Philadelphia that used to specialize in the "Max-Y" grip. I used it for a year and a half around 01-02 and did some of the best bowling I ever did, but I had the hardest time finding a driller that could replicate that fit. By the time I started drilling in 03, I left that set of balls behind and to this day I wish I had something that felt as good as the set that he drilled for me.
I'll track my friend from Philadelphia down who put me on to that guy and I'll get his info to you if he is still around. The center and shop he was in was like a small warehouse with about 12 lanes or so in it and alot of high tech equipment. He did a lot of work for PBA pros and was only open in the shop for a few days a week back then. Hopefully he's still doing business.