I need to replace the thru hull fittings in the transom for the deck drains. They have 1 1/2 hose attached to them. The problem i'm running into is finding long enough ones. The plastic ones i took out had 5 inches of thread on them. I've tried fittings that were for 3.5 thick transoms and i'm unable to get atleast the width of the nut unto the fitting.