Thanks a heap everyone for the very thoughtful replies. I have thought about this a lot, until I realized that it's not thinkin, but measureing that's gonna figure this out. I have had a "Fascination" which is a fully semetrical airfoil pattern type ship and it was very easy to land. I recently have been flying a world models super sports 40 that is also very easy to land, but a bit fast. When the showtime is coming in, I do my usual fly the pattern, then on the downwind, throttle to 1/4 or so, turn at the base and turn on final, chopping the throttle to just a hare above idle. With my other 2 planes, this would establish a glide path with the nose level or slightly down. The showtime slows up very quickly and the tail drops -- then the wings sort of go side to side and I wind up over-corecting like I'm having my first landing ever-- then bounce, bounce, bounce stop.

During normal flight, (only 3 flights so far), it seems to be alright -- sensitive on the elevator, but good roll rate -- needs a little less down aileron compared to up aileron. The rudder is CRAZY -- I bumped it when I was throttling up for a straight up climb and did a snap roll looking kind of thing that I thought was a radio glitch or hit it was so fast. It flies upside down as described previously. After thinking about it, I thought that I would move the CG forward a bit. SO I rechecked it and it was a bit back from recommended. I had the batteries just behind the turtle deck and moved them to the wing tube, rechecked and the cg had moved to about the recommended -- about 1/2 inch forward -- We will see how it goes maybe today.

I had thought that maybe there was up thrust, but really the plane doesn't show any other signs -- eg sinking fast with power off -- it seems to need a touch of right thrust, but not really very much of that -- maybe one washer--two at most. I will check the incidence of the thrust line with respect to the tail and wings next time I have the cowl off and report back to you folks.

One problem I am having is the inability to precisely measure the cg -- pretty basic I know and inherently at the root of this problem, I suspect -- My GreatPlanes CG machine is just a smidge too short to handle this plane so I marked the wings and have been using fingertips -- I did come across an interesting way of doing the CG by "TOR" with using a digital scale I'm going to try.

Thanks again everyone -- I am reading all of your input intently.