I rebuilt my motor for my 02 800 I put on a hotseat cheater head set for less than 3000 ft above sea level and I'm at around 900 -1500 ft. stock jets are 500's I have 480's in it now and I was thinking for radar runs I was going to put in 460's is that too lean?? supposed to be around 30 degrees out and I'm running about 8% 114 racing fuel and It has 160 - 162 lbs for compression. It also has stock pipe w/ dyna port can. The motor has about 100 trail miles and the center of the piston is starting to carbon up and still has quit a bit of wash on the piston and the plugs are almost black w/ no sign of brown.