I own a 2015 North Trail camper. Rarely use the black water rinse system. However, used it just this week to find that water ran down inside the skin of the camper and came out the bumper area. There was no issue this water inside the camper or on the floors. Someone told me it was the black tank rinse vacuum breaker, and then reading on these forums there is some info that there is no way to access these breakers. I can order a breaker valve, not the issue, and the cost is minimal, but will my camper guy be able to change it out, and is that the issue? Then I also read that people were saying 'did you winterize that system' and my question is - WHY? That system seems to be just a short something that goes to the black water tank and should be self draining, and since I rarely use it - still wondering WHY? Is it the breaker? or is it something else? And how the heck would you winterize that? You can't pour antifreeze down that - you have to connect a hose?