John Weber.
I am not an expert on four stroke engines, but I thought that the ideal way to run in a new engines was to run it very reach the first gallon of fuel and run the engine with short 4 to 5 minutes runs and let it cool down and them do this procedure all over again. Your statement !QUOT!engine has about 10 hours of continuous operation on it so it should be fully broken in!QUOT! got me a bit confused can you explain a bit more.
Volfy-RCU.
I have only run 20% nitro and you see a noticeable difference from 15%, to be honest I could use a lower nitro content because my plane is overpowered, but the problem is that once you get used to the power of the engine is quite difficult to give up a few hundred rpm
