Hi Ernie: Another trick I use is to draw a line with either a wax pencil, or crayon at the center line of the hinge. This keeps the ca from being able to wick in at the point where the hinge flexes, making it brittle. I too, have never removed the covering, or drilled a hole to help the ca wick in, and never had a failure in the 4 short years I've been flying, but it does not sound like a bad idea, if nothing else for piece of mind. Always glad to help if I can Garry