You know, everybody says to use vaseline on the hinge pin when using that type hinge to prevent epoxy from fouling the hinge.

I found that because epoxy doesn't really stick to the plastic that the vaseline isn't necessary. I use a needle point oil applicator to put a drop of very thin oil on the end of the pin and it wicks down the hinge.

When the hinge is inserted, I wipe off epoxy that oozes out before I push the hinge all the way in. The keeps most of the epoxy off the hinge line.

Then I put the control surface on a flat surface and push it down so all the hinges go in the exact same amount.

Now, DO NOT MOVE THE HINGES TO SEE IF THEY ARE FREE! That will do nothing but work glue into the hinge. When the epoxy is fully cured... and I do mean fully cured - not just hard, give the hinge a good flick with your finger and it will pop free of the epoxy and move perfectly smoothly. Very simple to do.

Oh, and CA hinges still suck.