Doug, from day one I used a tach for my Saitos, not trusting to my ear, and went by the book, plus info from a Saito site on line, breaking in and tuning. I broke the 100 in on the bench for 40 minutes, reset the valves, then set both the high and low ends. I RECALL setting the engine rich on the high end--just for the P-51's cowling, and THAT engine was below the centerline of the fuel tank, too, so should've been rich if anything, low end, but I suspect it was the low end that made it flame out, maybe I set the idle too low--though I doubt that since the P-51 would walk away from me when I put it on the grass. It's a mystery. And I don't like that kind of mystery.

Bill Robison, a man I trust, from the Saito Club forum suggests the ATF ARO. Remember, the ATF is just afterrun oil. It evacuates almost immediately, flushed by castor, when the engine is started, hm? So temps ought NOT be a concern or problem.

The ATF is good because, I'm told, it somehow absorbs the residual (and atmospheric, in the hangar) moisture in the engine's guts, defeating the creation of the corrosive acids which cause the ruination of steel bearings, cams, et al.

J.