I have uni pods, fmf fatties pc2s, stock carbs, +4 timing at 900ft with 27.5 pilots, one clip below middle and its about 40-50 degrees in michigan. I started with 300 mains and WOT plug chop showed pretty lean so im at 320 now and haven't done a second chop, i will this weekend. Leakdown was good and 125 on both for compression. Hope this helps?