Jan,

In this case I believe there is more to it than just fuel quality and nitro. I run Wildcat 15% in all of my models as well as Cool Power from time to time. I have been through many gallons of that fuel and its served me well. I use all OS number 8 plugs. What I am seeing is that engine just does not work like the other LA of FX engines I have. Nose up, RPM up. Nose down, shuts down. Throttle response fine. The engine will bark just fine. I am swinging an 11X5 currently and have an 11X6 as well. I believe there very well may be something to the air bleed not being big enough for the application. There has to be more to it than Fuel vs. Glow.

Ryan