Dip the pivots of the hinges in heavy oil, wipe off the excess. Smear white grease on all bevels of the hinge line... don't get it in the holes! Squirt glue in all the holes, assemble, flex a couple times, and leave it alone. Afterwards just wipe everything down, the excess glue will flake off. The end result is a control surface that "flops" with no friction.