Yep, I agree totally, but it's easier and looks better (apperances are something) when everything is square and connected correctly. Mechanical trim is easier because your frame of reference is square and that makes everything else square when set up. And, as you know very well that the slightest irregular offset causes differences in the sky that are sometimes quite profound.

And, yes, of course, it flys much better once the trim is done right.

Were you there when Ron and I set up the Skylark 70? We spent quite a bit of time adjusting then flying then adjusting then flying. It was amazing how nice that plane flew once everything was right. AND, I spent some time when assembling that plane on making servo's square in the servo tray. You can fly it next time I'm out at Straw with you. It is clearly my most favorite sport plane.

CGr.