i can't stress check those fittings enough. even for people who have had their boats for awhile.
i launched my boat in dunnville 1 hour from home, and sure enough the fitting popped right off, my boat started taking on water LIKE CRAZY!
its a pretty big hole, i replaced it with the brass fittings.
i think over the years the white plastic gets UV damage and it deteriorates the plastic making it brittle