Hey guys I just bought this 2011 M6 for my boy 1900miles. I have only owned cat sleds my whole life but have never owned a 600 only 800’s and up in the M series. I have done a full service on the sled checked things over. We ride at mainly ride at 1600-2000ft elevation. I changed the primary’s to 70g weights and I know I have to changed the helix and spring in secondary still it is stock. But what RPM’s are peak for this 600?? I was going to take it out tomorrow and see what it is pulling. Thanks