Alright I just got done tearing down the entire back end of this 08, and let me tell you, I'm glad I haven't broken it in yet. There was no grease in it. Nowhere! I torn the back end down to get to the carb to jet it and I just couldn't believe it. I packed every bearing and got it ready and torqued. It's perfect and what a difference. Anyway I am at 535 ft elevation and I put in a 168 Main jet with a 48 pilot jet. Stock everything with GYTR fuel screw at 1.5 turns out. I haven't started it yet but I will tomorrow. I believe it will be just about right. Stock I could hardly start it. It was so lean. I will keep you posted on how it runs. By the way we have had warm weather in Charlotte, NC and is about 73-76 degrees.