I have been using dubro or klett pinned nylon hinges since 1970 glued in place with hobbypoxy,after 37 years no pinned hinge hailure and none have ever pulled out,They have been used in everything from trainers,sport,ducted fan,pylon racersmulti-engines,and sailplanes.I have several planes that are flown every weekend that are over 20 years old including my original trainer built in 1970 .pinned hinges when properly installed leave no gap that requires sealing