RE: 1.5" servo arms
Actually, they're not, the servo-rod connection is about 3/4" down from the horn-rod connection. I found some interesting Excell spreadsheets for calculating force and they take into account if the connections aren't square so I'm going to try calc'ing those out. All in all the elevator-servo setup is very not ideal on this plane, they should have located the 'servo-hole' closer to the elevator so the connections could be more square.
Sam