Very knowledgable guy when it comes to yamaha. MadMaxPerformance.... I'm pretty sure his name is Bob Syndmiller(sp)
I have him in my mail contact on the home computer. I'll post later tonight with the right name.
Bob (aka Mad Max) bleeds Yamaha blue but he played with the cats a little and got a good setup for the 900 with Cutler's 1000 pistons. I believe he told me all his engine work was done with Ralphs guidance. Bob's day job and family life got too hectic and now he just refers everyone to Ralph.