I bought a used Moki 2.1 without manual etc and am trying to tune it. I fired it up today with a 20 x 10 topflite prop using 0 nitro and only got 6200rpm. (was only supposed to have about 3 gallons through it). Anyway, I was adjusting the needle valve trying to hear the rpm change but was having a hard time noticing it.

My question is, about how many turns out is your needle when you have it set correctly. Mine is roughly 4 1/2 turns out. Seems too much.

Thanks.