hey people i have a trx 2.5 in my nitro stampede, and i think its not runing right, well this is what happens it takes alot of pulls to get it started, and when i get it started it runs good i think.. then it will die like in 3min, and the tank wasnt even empty, well i took my dads meat themomter and seen how hot it was and it was at 140F is this normal or am i runing it to lean or too rich?