I've been reading the thread regarding DLE 30 engine problems and it sounds like you guys may know what you're talking about. I could sure use some help with mine. Problem I have is that the plane will be flying around just fine and the engine quits. Seems the plane has made more dead stick landings than with the engine running. The engine is mounted upright in an Ultra-Sport 1000. I like to fly pattern sort of maneuvers and so I tend to use the throttle alot. The thing quits at something less than full throttle when the plane is exiting downhill. You can hear it falter or hesitate and then it won't throttle upit just quits. As a clue to what may be wrong, the engine burbles briefly when doing an axial roll. I don't know whether this means maybe the engine is too rich or too lean, let alone whether it is the high speed or the low speed needle that might need adjusting. The engine has had a couple of gallons of gas run through it. Ignition battery is 6 volt 2000 mAh with voltage regulator. I've switched plugs back and forth between the one that came with it and the NGK CM6. It quits with both of them. Examining the plug, it appears to me to be more black than brown. I've been flying glow for over 50 years and have to admit I'm a real novice when it comes to gas. I'm sure open for suggestions if anyone would like to respond.