hi people,

I have a hobbico avistar select with 40 LA. I've almost done 10-15 flights. My 40LA engine is giving me problems these days, it keeps on shutting off either inflight or when running at full speed on the runway. Please help... I've checked the fuel tank and the tubes for any leak but found nothing. The engine runs fine whenever I set the needle valve setting to optimal position, but it slows down after a minute or 2.

Please help!