Hi People..
I have some problems with my sirio .12. It was stopping randomly and also leaning out while on the track. Leaning out has been fixed by using a novarossi carb but its still stopping randomly.
Today after not being able to fix the problem (sometimes it goes 3mins, othertimes 7mins etc) I did some dohnuts/powerslides and noticed it stopped straight away after getting off the throttle. I restarted engine and repeated the dohnuts/power slides got off throttle and engine stopped again straight away so it seems if engine is under a lot of load while throttle is open its (no idea - you got a theory?) doing something anyway. But I can do a high speed WOT and it does not stop
Too much/not enough pressure line? aggh going crazy lol..
So what dumb thing am I doing wrong ?

(Man my .21's are soo much easier!!! lol)