I spent about an hour just filing and sanding (with rolled up emery cloth) the trim tab hinges so that the clevis pins would fit. There was just enough welding swell and mis-alignment to prevent the pins from going into the hinge tubes easily. I said filing, but I couldn't really get a file in there due to the closeness of the hinges to the mounting tube that carry them, so it was mostly sanding. But I eventually got enough material out of the hinges so that the pins slid right in. There is some binding when the tabs are deflected up and down due to misalignment of the hinges (they are not parallel to the axis of rotation - so they bind after a few degrees). I sent an email to Mark at AviPro to find out what the trim tab range of deflection should be. I don't think it is very much.
I also bent the control linkage tubes to clear the rear of the stabilizer with the elevator full up. Since the elevator has +/- 30 degrees of motion, I figured that about 30 degrees in the tube would be about right. Only trick was figuring out where the bend needed to be. I fit everything up and measured it. Actually I did this and, being an engineer, I also laid it out graphically to check the measurement - hay, that's what we do, so don't knock it. I am confident this will work. But I have to drill out the linkage control horns for bolting them to the torque tube first - and I am concerned about the clearance between the bolt and the fabric of the stabilizer. Too much travel will push the bolt into the fabric. My e-mail to Mark should clear this up.
