any of you guys had problems with your remote drain plugs breaking or not closing and sealing correctly hard to close? after several tries to solve this issue i have come to find that once the drain has been left open the rubber o ring dries out and when you go to close it the o ring drags on the plastic drain hole and wont close all the way without extra force, however if you wet the o ring it closes easily, adding lubricant attracts dust, dirt etc. some lubricants are offensive to the rubber o ring and will errode it over time and cause added issues. today i removed this item and went to a standard T&H manual plug which I dont mind screwing in and getting on one knee to reach, and the hole from the valve selector will now be a battery monitor once installed and no more dealing with the issue so if you are having this issue over time this may be a solution for your problem. my boat is a 2014 Z521C.