Milt at Precision of New Hampton.
As much info as you can provide Cam specs, or if you have a dyno sheet that shows your torque curve, gear ratio, (do you come out of a corner in 2nd or 3rd?) axle ratio, tire diameter
I would still try Precision but I heard they aren't selling retail any more . I'm sure it's a pain selling to people that don't have a clue what's going on and when the results aren't as expected, somehow Precision has to make it right.