Hello everyone!!! just picked up our new fuel 287, so far love it but late in the year so it is already winterized, my question is this, is there a fresh water vent line already plumbed in like it should be or not? the reason i ask this question is that my forest river was not, just the tit on the tank and had to plumb it myself or i would lose half my water going down the road, cant see any small line on the fresh water fill however there seem to be two large lines the same size, the fresh water fill and one above it, is it possible that one of these is the vent?