Thanks for the tips. I'm going to start it up later and adjust the low end, although I won't be able to flight test it. It's very possible the low end is lean as I set it yesterday for a fresh start at the OS manual setting of 1 1/2 open. I ended up with it a just a bit over 1 turn open. Like I said, trying to decide whether it is rich or lean has me a bit boggled.

I can run the tank all the way down if I don't kill the engine like I described. I tested the tank endlessly for leaks, but yesterday I noticed some tiny bubbles in the line. I have to look at that more closely today. Is there any amount of bubbles that is OK? I've only noticed as I was starting, and after that it was in the air. Well I'll find out that too.

I've got the muffler to engine surface sealed with RTV silicone and all the tubing (except after the needle valve) is clamped with plastic ties.

Thanks, Balin