Floyd: Three Cougars B4, fell in love with the 2019 3121 Montana. Here we go. Restrung the second grey pull valve, now its next to the other grey valve used the "Valtarra" 9ft cable. The fresh water drain, relocated it to the side of the rear trailer. didn't like crawling two feet under the trailer to drain. Installed two small "L" brackets which now stops the dinette table leaf from falling down. Washer/dryer, installed PEX shut off ball valves for the HOT/COLD washer water before the washer in the basement . Installed with PEX color coded handles RED/BLUE. Bought from the HATCHLIFT Co. all needed lifts for the basement doors. The magnet latches are a good selling idea, but the plastic housing for the magnets fail (sun damage). You don't want that door falling on you.