Hi, we have been camping with our Aliner Ranger 12 for more than 6 months, over long weekends and over the summer and so far so good. Back in May we decided to split our 20lbs propane tank extension with a Y adapter to add a 20lbs to 1lb converter to use it on our outdoor Coleman camping stove without having to carry additional 1lb portable tanks. We noticed that after shutting off the propane gas valve if we want to get rid off the gas collected in the hose lines we need to burn it from both ends, from the outdoor stove and the Aliner indoor stove for about a 2 minutes or more on the highest temp level before there is no more gas in the lines for it to be safe to disconnect. This process feels like a big waste of propane if you ask me. Not sure if this is normal or if there are any other alternative best practices that we are not aware of. Thanks.