I finally got the idle mix set right on my Thunder Tiger .61 Pro. I seems to run great! I think my assumption from the beginning (incorrect) that the low end mix would be set slightly rich by default from the factory. It was too lean! And when I did the "pinch test" at idle (per TT's engine manual), I wasn't waiting long enough to see what would happen (engine speed up before dying OR just die) and wrongly concluded that that method of tuning was somehow not as useful as other methods. Anyway, I'm much happier with the .61 TT Pro! I can hardly wait to get out there and learn to fly my second plane!

Ed, I think you're right, it will be awhile before the idle setting is perfect until the engine has seen a lot more fuel through it. Thanks.