Hi I have some problem understanding the bottom needle settings, for my CEN genesis 2 1/2 turns from flush ... "from flush" ???
Main needle, 3 1/2 turns out -> i turn the screw totaly in and then 3 1/2 turns out but the bottom needle "from flush" ???

Tnx.

from flush means like the end of the needle which u turn is flat with the carb around it so it looks flat i think but i could be wrong[&o]

I dotn have a genisis. but "from flush" would imply that you need to screw the needle in until the top of the screw is flush(at the same depth as) with the housing that the screw is in. so that if you run your finger over the screw it feels the same height...

Read the following, it will help you alot:

http://www.rcnitro.com/rn/articles/ht_tunengine_01.asp