Had a issue with the extech today when I took it to the track to get some tanks in it before the pro series this weekend. I put about 3 tanks through it here at the house last week and it ran strong. Got it to the track today and no matter what tuning changes I made it wouldn't make it around the track more than a couple laps or less. It kept dying after wot and as soon as I would let off and it dropped in rpm it just shut off. I've quaddruple checked my idle and it continued to do this whether I was at the rich needle settings or the tuned settings, checked the clutch and it's fine and my servo epa is correct also. The only thing I can think of is I need a hotter plug, I was running the medium hot extech and just ordered some hots, when I was runnning it at the house it was in the upper 80's and 90's and today it's only 75. I'm hoping the hotter plug solves the problem, has anyone else had this issue before as maybe I'm overlooking something. Thanks