Right now my bike runs great at 1500-3000 feet. I have a 165 main jet and a 50 pilot jet. This Saturday I will be riding between 8000-10,000 feet. I have the ZipTy fuel screw at 3 turns out. Is there enough adjustment to choke off enough fuel in the pilot circuit to leave it alone? I am thinking that I should drop to a 45 pilot if not. What about the main jet? The guy I'm riding with has a CRF 450 that he drops 5 sizes on the main. That would put me at 152. Does that sound right? Needle is in the stock position. Does that need to change? Any help would be appreciated.