Chief...do yourself a favor and scrap the water filter system. Put in a bypass with a piece of Pex and some sharkbite fittings, easy and quick...many of us have done it. Get an external filter and have that thing outside attached to the water tap and if it leaks, at least its outside. A great many of us have pulled those filters out because they are notorious for leaking. Pulled mine out before ever going out the first time. First thing I changed when we got the rig home from the dealer.
2011 GMC Sierra 2500HD
2014 Rockwood 8289WS, Diamond Pkg.