Thanks for posting the DYNO.
It is similar to others I have seen.
On jetting, here is what Pro Circuit recommends
Main 168, Pilot 55, Needle N82M, Position 2ND, Air Screw 1 3/4
I played around with my jetting for years until Motorrad told me what I should use and guess what?
Pro Circuit agrees
This is for sea level.
In 14 years of riding it, my sand bike has never ran so good.