Hmm alright so we are trying to figure out what the hell is wrong with this little FC. On cold mornings its runs perfect at initial startup , Upon warming up it sputters as if there is a misfire. When engine is warm it it only fires as if it is only 1 rotor working. Now here is the weird part it will only sputter until 3800 rpm because the it takes of like a bat out of hell. Plugs have been changed waiting on the wireset now. coil i have a bad coil, injector, or vaccum leak somewhere. Oh yeah it does have an exhaust leak which will be sealed tomorrow because the gasket are in. I'm stumped