INteresting - Had problems with my Propane system over JUly 4th.
Went into camping world and they suggested new pigtail since they are usually the first to go.
That did not help
After doing some tear down and leak checking - Turns out the step down regulator on the drivers side was leaking - alot. We replaced it and we purge the lines and everything is working better
Also had problems getting the water heater propane heater to light. Initially they thought it was altitude ( Yellowstone and Tetons). Turns out the nozzle was partially plugged.