I have a 2018 Grand Design Solitude 360RL-R that we bought new and had a stackable washer and dryer installed in it. From day one it would shke like crazy when running the washer. I bought a tripod to go under the goosebox hitch and this helped a little bit. Recently we noticed that the drawer to put the washing powder was in was hitting the door frame and chalked that up to a gremlin. Well we had another issue and had to pull the units out. Turns out they were not secured in any kind of way & the units were walking in the closet. Does anyone know the proper way to secure the stackable unit? if that would be done it would have to help a lot. Thanks for any help.