2012 300 2-3000ft 172 main 40 pilot and jd needle second from top. Runs clean and happy. Have a race this weekend and it is 3000ft to 6500ft. Guessing mostly 4000- 5500 ft range. how much leaner should a guy go to start. Was thinking 170 main 1 leaner on needle and a 38 pilot. A little leaner everywhere.