UPDATE

Did a lot of flying today. I think moving forward the CG has really helped. It does track better on the uplines, though it will still pitch over to horizontal on its own as it looses speed on the upline.

One thing I have noticed is that there is a good deal of rudder to pitch coupling. Specifically when rudder is applied, the plane will pitch to the belly. This is really most notable on a 45* inverted upline or downline where I am trying to correct for thrust or cross-wind. I assume it's happening all the time, it's just that I notice it most here. It will pitch to the belly during knife-edge flight, too. Is this common? Is a mix-setting a reasonable solution?

Thanks!