After rooting around looking for a new fresh water leak, I've found the same problem as the original poster. I was thinking of the same temporary fix as youroo, but have a new fixture on order just in case. The point about winterizing is a good one, Lefty59. I've only winterized this RV once, and it's very likely that section of hose froze up. I park on an inclined driveway, and even after blowing out the lines with air and then packing them with RV antifreeze I bet that fitting was full of water.
Good thing was the leak is on the outside and not soaking plywood or carpeting.
2007 Coachman Freelander 26' w/ E-450 6.0 diesel
1982 El Dorado Bermuda 27' w/ E-350 460 gas (sold)