Hello, I hope that someone can help me with my UDC setup.

The airplane has been up about 3-dozen times and is a joy to fly with a Saito .91 up front. I started at the recommended CG, but have steadily moved it back for better 3D. Moving the CG back has helped stabilize the hover.

Here are my observation and questions:

1. The airplane requires a significant amount of "up" elevator trim - darn near 3/16". This is counter intuitive to me since I have been moving the CG back I would expect to have to crank in "down" trim like I do on my foamie.

2. Inverted flight still requires a "push" on the stick.

3. The airplane is not stable in a parachute. I dive and pull full "up" and she will transtion to a parachute. It will gradually start a spiral that degrades into a spin. I have it laterally balanced to perfection. A little aileron "reflex" doesn't seem to help. Again, I would expect some wing "rock" but it starts what looks like a tip-stall spiral.

Can anyone see a pattern here or offer some advice?

Thanks!

JC