Normally I drill 3/16th inch diam hole down the middle of the slot and clear away the wood grain created by the turning drill and put the CA down the hole, on each side of the hinge. I didn't do that on my P-51B because of looks. I think its a good practice, although I must agree - a little ca wicks all over the hinge and I recall most of the time my CA drips from bottle before I get the nozzle near the hole and I get CA all over. I really don't want to go back to the plastic hinges. I tried all of them and they are not without problems either.