Hey everyone. Thanks for helping me out. I just came home with another Gallon of Byron's Fuel 20% Nitro since that engine's already eaten an entire gallon of it. Umm, what are those factory settings on the needles? Was it something like 4 1/2 turns out on High Speed Needle and 1 turn out from Flush on Low Speed? Air Leaks, As a matter afact, it would seem that alot of Air Bubbles do enter the Carb and sometimes, makes the Fuel escape back into the Fuel Tank. I've already tested the Fuel tank itself by putting it in water and checking to see if there's any small holes on it. The tank was fine. Then, i checked out the O-ring under the Carb to see if that was busted, it was fine as well, and reinstalled the Carb back on the Engine tight. What other areas could there be an Air Leak? Also, i've checked the Black Cooling head, and all 6 screws are tight on there too. GKCONTRA, it's like i said before, if i bring that High Speed Needle OUT like it's really suppose to (That's how my Genesis LE is) it won't let me keep the RPM like it's suppose to. It will lower down and die immediately even when you're holding the Throttle down all the way. Once you let it go, it shuts down. I check the Glow almost every so and so, and that thing is still igniting like a champ. I have a strong glow igniter too so those are surely not the cause. Aluminum Crusher, i don't know, the fuel i have is fresh, and was the one fuel recommanded by CEN. It's the same fuel my Genesis LE uses too. I wonder guys...Do you all think it might have to do with that new Black Cooling head? I'm just guessing. I might be entirely wrong.