I had the similar leak at the Port side suspecting alongside the ventilation pipe of the bathroom opening to deck through rounded louvres. The connection of pipe to the ventil was damaged and wetting the floor at same location.
We are lucky our screen and door are still intact... the screen needs tender-loving care and I even lubricate it because there are a couple stress locations - an overly rambunctious child will do it in one day - then I'll be in the same boat.
Thanks for the offer... what State do you live in? Our screen door is in good shape... but, might be nice to have in reserve because I can imagine they are hard to replace.