Ok guys, I have a gp venus 40 that does a pretty strange thing. It flies great except for one problem, when I hit about 50% deflection on the elevator (mostly when looping) it starts to spin to one side. during the first flight, it always seemed to spin to the left. I got it home and found that it was a little heavy on the left side, so I added weight to the right wing and went out again. But today it does the same thing!? I didn't really pay attention because I was so upset, but I think it was doing it to both sides and still with a tendency to the left?
This is a difficult problem I know, and unless you have seen it fly it's tough to understand, but if any of you have seen this before, or it sounds familiar. . . Could it still be a lateral balance problem? could a nose to tail balance problem cause this? (it is about a 1/4" nose heavy).
Thanks in advance to all of your replies.