We just got a race preped bowl from him DAMN the MAN does steller work!!!!! Dont even know how much it will help but just by lookin it's bar none the best $$$ we have ever spent on anything !! I hate to say it but we feel like we were undercharged just my 2 cent's. It was only $ 100 more than what we have been spendin on a stock bowl. Thanks Jack U THE MAN !!