glowplug, the angle of the control rod for the ailerons should be perpendicular to the hinge line. This will ensure equal travel in both up and down. This will also allow you to mount the control horns so that the pivot point is over the hinge line. I attached a pic of how mine looks. Any easy way to ensure that the angle is correct is to use a square and put on edge on the hinge line and the edge up to the servo arm. Then you can mark the location for the control horns. Hope this helps.

Guys, try to post some pics of your planes during the build and definitely afterwards. I will have some new pics up tomorrow of the plane with the O.S. 91FX and the new cowl.

LaTer.