I can not seem to make my engine idle anywhere near 2000 rpms. it just dies. It runs great everywhere else. I was using a os f, cool power 20% comp heli. 16-12 prop. it turns 8700 rpms. I was running the low end 1/2 turn in from flush and 1 and 1/8 on the high. I have gone a full turn on the low in both direction with no success. I see Troy Newman was running an enya #4 so I thought I would try one. Any thoughts