Thanks for the info!

I even already have a MkII in my Nano so that would give me lotsa flexibity that way.

What pipe are you using? Do you have any pitch changes with power changes? With my 12S set up the Hawk pitched a lot with power change. I was able to mix a large part of that out but the correct fix would have been to get the thrust line right.

I saw a tank at Jet-Tech built for the AMD Hawk. I think it was 55 oz which would be great for the Wren. The 12S set up give me a very short flight. 2:30 and into the pattern. On the deck not later than 3:00. But hey, at least my landing weight is the same as my take-off weight. Even so, I have not experienced any wing dropping either.