hi cmoulder. the engine was bought lightly used, and i replaced both crankshaft bearings. it has its own pump in the backplate. the tank is on the airplane's CG, with the clunk being around 14 inches from the carb (12 inches from the pump). plumbing all new. OS 'F' plug, and 20% nitro fuel (with 20% synthetic oil) (Byron Fuels).
Unfortunately I have seen so many posts about this engine being very difficult to get running, that I'm giving up on it in favour of a new stroker.
I just need to know whether anyone has used these engines for pattern flying.
Thanks for your input.
Chris.