What if the normal MK horn was replaced with straight all-thread that had a (near) 90° bend facing forward (over the hinge line). The all-thread could go through a threaded base with a jam nut. Any excess thread would be down inside the flying surface. The hieght of the horn could be changed one full rotation at a time, and the distance to the hinge line could changed with one rotation of the MK plastic piece. Of course the all-thread would have to be bent carefully with heat to retain strength...

here is a quick image of the idea...no threads shown on the all-thread to speed up the modeling...

Any comments???