He did my 99 YZ125 and he did pretty good work, but very expensive! I would have rather had Eric Gorr do my cylinder but he was out of the porting business at the time. Eric's the best bang for the buck period:)
Tom does my bikes, motor and suspension, I have nothing but good things to say about his work. I know he buys all the bikes every year and does alot of testing to get them right. I belive that you get what you pay for.