I have been flying my Alpha 40 for the last year and trying to figure out why it keeps dead sticking when doing touch and go landings. First couple of touch and goes are fine and then after that it is a crap shoot. As I advance the throttle on the third or so touch and go, the engine dies. Feels like it goes lean.

I have taken of the guards on the needles off and done a ton of research on setting them. I feel I have a decent knowledge of setting the HS and LS needles. On the ground when tuning, I get a crisp transition form idle to high rpm. In the air flying around it just screams.

But on the 3rd or so T&G, the thing quits on climb out. I have changed all the fuel lines and check for tightness on the engine bolts etc...

My current needle settings are LSN 1 turn out, HSN 2 turns out and I am at 600 ft above sea level. Fuel is Powermaster 15% nitro fuel.