RE: PA Addiction X??
I installed all the carbon fiber controle horns before I glued in the hinges. I roughed up the bottoms of the horns with sand paper and glued them in with epoxy. The slots that these horns go in were too small and too narrow. Trying to get the horns in was quite a task. I used a hobby knife to enlarge the slots, but it was not easy. I think there is some carbon fiber in there some where that is a pain to open up. The aileron horns would only go in half way, then hit some thing solid. It took a while to get it done without over sizing the holes. A needle file was used to open up the hole for the clevis screw. The instructions also recomend this method. I also soaked the metal clevis's in a bowl of alcohol to remove any oils before gluing them to the carbon rods.