Hopefully he won't have to take all of that $600. Any experienced dyno tech that knows Kawis should be able to bring in in for less than $600.
I did my own install, and the jetting was off a bit. The owner @ EDR ( our local speed shop) charged me $200. 'Course it still isn't perfect, but much closer than I could have done by "seat of the pants" dyno.
Leo Vince, Factory Pro kit, dyno jetted, 138hp. G.P.Suspension front, Penske rear.
For those that fight for it, freedom has a flavor the protected will never know.