I've been struggling to get my Big Buddy to work on the high setting. I've tourn it apart and cleaned all the lines, plus the pilot light. Using a bottle or 10lb tank with hose to a quick connect or standard thread connect (both sides), I get the same results. Every time I turn the dial to high (after warm up) the pilot goes low and gas sputters, then goes out all together. I should mention I live at 7,500 ft. I had the same problems with my first unit, replaced it, worked fine and now back to where I started.