Thanks Sean! That's all I know is Mike said it came with 88 jets,out of the box. So...I'll start from there next time out to the track,probably in 2 weeks. Almost certain the Gratiot Cruise is next Saturday! QUESTION!...ended up with 82squared on the jetting with a pri. PV,on the 850 when it was on Jake's dyno a few weeks ago. Has anyone ever seen or heard of squared jetting with a PV??? Engine responds well,makes good power,but I've NEVER seen squared jetting using a power valve! BTW... A/F ratio was 13:2 with this combo. When I brought it in,I had the jetting set at 82/90 with a 4.5" pri. PV,and the A/F was 12:9. Temps were 83-85* and humidity was 41-43%! What do you guys think? RandyB