I have a 2013 BH and the propane tank( on the opposite side of the trailer from the cross over valve)makes very strange noises, similar to an old piston water pump when propane is being drawn from it. The noise is loud enough to be heard inside the trailer which drives my wife crazy. It does it on a full tank, as well as a partially full one. There is an 80psi( I think) regulator hooked to this tank. Any thoughts //heartlandowners.org/images/icons/icon5.png