Hi All, During these trying times, I was fortunate to be able to invest some time and money in tackling / solving this problem. This all began after installing a digital thermostat in my Fleetwood Niagara and finding my furnace would not ignite. After much angst in troubleshooting this issue, I believe the problem is a failed auto change over regulator. I decided to change it. I still don't know yet if I fixed the furnace issue!!! But it seemed like a good time to try solving the "problem". It's not been tested yet, but I feel confident it "should" work as intended. I don't normally use that much propane when camping. Only once did my tanks actually "change over" and I lost the High Pressure feed to my outside stove while cooking. I didn't realize when it switched over to the reserve tank that I would lose my HP feed. This was considerably frustrating to me at the time. Since then I studied the setup, understood why, and then became determined to solve the "problem" someday. I searched every post on this forum related to the issue, but no one I read, spoke specifically how to solve it other than some generalizations and work arounds. Well, for any of you that are interested, I believe I found the way and built the LP bypass required to constantly feed the HP regulator from either tank or on "change over". This is an expensive Mod; Requiring sixteen brass fittings, a few of which were simply not available in the big box stores; two borrowed from the regulator and (2) pigtails with 1/4 male inverted flair ends. I'm using a Marshal Excelsior 253 regulator. Attached are some photos, including my schematic drawing w/parts list. I welcome any feedback from our engineers out there to hopefully tell me I didn't just waste about $110 in brass fittings!!!