I sent it to Paul's. Great service, very reasonable price. He bench ran it, and diagnosed it with a bad/worn out piston ring. He then ordered a new one, installed it, and ran it again, dialing in the needles and verifying that it ran good. Very good, in his words. It's now back, and in the Extra, just waiting for these damn thunderstorms to clear up. I'll post a better review on my experience with Paul's after I've ran the engine, but at this point, I'd say I made the right choice. Thanks for the recomendation.