I have a reel mower with a GX120 on it. It starts up on 1 pull but only on turtle. Choke doesn’t do much of anything. If I cover the air intake hole that also changes nothing about how the motor runs. However, as soon as I engage the drive system and the reel at the same time it dies. I can engage one and not the other. I can engage the reel but if I get into thick grass it bogs down. Also I cant engage anything when the mower is above 30% throttle. Basically any kind of resistance above that throttle level kills it immediately. Please help!!!