I just tried a different setup, the carbs had 48 pilot, 155 mains, 1.5 turns on the air screw. I am also at 650ft elevation, and the temp is right around 20 today, so I put a 52 pilot and 170 mains, but it was too rich part throttle, cleaned up a lot with 2 turns out on the air screw and i think it needs to go out another .25-.50 of a turn, so i think it needs a 50 pilot. I havent had a chance to get a new set of plugs so I can do a plug chop but it feels pretty good. I think I may go a little bigger on the mains just to be safe and then make a pass and pull the plugs to see what they look like.