well l picked up a basically new plane 5 flights... problem is l can get the engine to run over 74000 an now its dropped down to max 55000...checked filters they are ok..checked uat looks fine no kink in fuel lines...lost as to what to check..max is at 100000 low 32000 pump is at 960..never touched any setting other then learn rc..I'm so running jeti...an a 3s life battery...any suggestions