Check your LP gas fittings! While doing routine maintenence on my 3 year old RV, I discovered a leaking LP hose coming to the LP tanks from the regulator. The clamping (or compression fitting) connecting the hose to the fitting leaks when moved. When alerting my dealer to the problem, he confided in me that the problem is common after a couple of years. The material now used is no longer neoprene rubber but another material. Apparently it dries out and leaks. I have more than 40 years experience with LP gas having used it for motor fuel along with the normal household uses and have never encountered such a leak. I've had RVs for almost as long and have replaced only one other "pigtail" and that was due to a rounded POL fitting. I have contacted the manufacturer, Marshall Brass, and am awaiting an answer. In the meantime, please check yours before there is a catastrophic accident. As with most things, quality is down and prices up. These units are now manufactured in Mexico with the Marshall Brass name and a UL symbol.