I had one hinge on my trainer's elevator break. I can't really explain it other than to say that it was the hinge right next to the elevator control horn. The PT-40 has a single balsa strip as an elevator, and the control horn is near the middle.

Anyway, cutting and removing all the hinges (6) sounded like too much work, so I researched here and came up with:

http://www.rcuniverse.com/forum/sear...0&sortMethod=d

This is what I have done and it's held up so far.

gus