I have tried each position on the needle, then ran the bike through the ranges, started it many times in each position also. It seems to run the best in the middle position. (3 up from the bottom) That is where I left it.
I have the air screw turned out about 1-1/4 turn...thats where it does the best also.
Should I go ahead and put a richer pilot in? ....if I can get one that is