Originally Posted by asw7576

I don't think you need to replace clutch shoe everytime after use. It's reuseable.

Stick to one brand of fuel. ( Different fuel needs different setting ). I cannot suggest a fuel brand. 16% nitro is minimum, 25% is maximum for .12 engines. 20% nitro is nice.

Don't use cheap fuel. Cheap fuel = Low quality lubricants.

Heavy smokes or Very thin smokes doesn't accurately tell your engine's optimum power. Use a temp gun, and set the engine to operate around 212 F - 248 F ( 100 C - 120 C ). Listen to crispiness while accelerating. Don't forget to properly set the centax clutch's spring tension. Not too soft ( engine bogging effect ) and not too stiff ( high pitch sound before the clutch enganged ). I usually set the spring tension at 0.8mm - 1.0mm