RE: Nylon hinges
Epoxy or Gorilla glue are two of the more popular choices for these types of hinges. If you use make sure you get a little bit of oil or vaseline in the hinge itself so that the epoxy will not get in ruin the hinge. If you use gorilla glue make sure you have firmly secured the control surface. Gorilla glue expands as it sets and if the control surface isn't secured then it will be pushed out of position.
Of the two I personally use 30 minute epoxy. Stay away from 5 minute epoxy as that won't give you enough time to get the control surface in place before the epoxy kicks off and sets.
Ken