Hello, I just got a Twist PNP 40 with the .46 Evolution. Idled and ran fine on the ground. Took it to the beach first flight, dead stick landing. Carb fell out.... Tightened it back up ran good then dead stick again. Can not seem to get the tunning right, but I see that i need to remove the pen... or any other suggestions? Im also running a 11x4 instead of the 11x6.