RE: Gremlin wing flex?
Well I flew it today and needed no trim adjustment after takeoff. It weighed in at 3.4 lbs dry. I was flying with a royal 28 engine with can muffler. I used a 9x4 prop because I had one and I thought it may have a little more takeoff power because I was launching it alone. It did quite well although not quite as fast as I was thinking it was going to be. With a 9x6 it will probably really come to life in the air. With the speeds it was traveling today, I don't think I will have to worry about the wing flex I have. I did full outside loops and inside loops at full speed and comming out of a dive and all seemed well.
Now on to the next project since this one flew so well. A slightly upscaled version with my .46 engine.