What kind of motor are you running now. This sounds like a GSXR problem. Kaws Honda and yamahas usually dont do this. Suzuki has a stupid starter deal that screw's up the starter drive when you try to run motor backwards.
I have worked with AJ for years and he would be my choice but I could be a little prejudice. He is set up with a serdi valve machine land & sea dyno and I think he also has as crank straightner in house. You would be surprised what a little seat work will do for your engine. I'm also trying to also get him into doing an inexpensive alky conversion for mini-sprints around $1200.00-$1500.00 for injectors,air cleaner, fuel rail custom map with chassis dyno time. The alky helped us some and it sure brought or engine temp down a bunch.
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If you have any questions pm me or give me a call at work 502-778-6833 DAD: