Same here on our Rockwood8289...one more reason to remove it. Can you imagine if it starts to leak as many have reported...some of them the canister drops and it gushes water. By the time you get your tools and loosen the hinges a few more gallons of water would run.
I removed ours and just put a piece of pex tubing in its place with some Shark bites. Just do a search....there are tons of posts about it, especially in the last week or so. We now just use a simple blue torpedo filter from Walmart, attached directly to the outside water tap and if leaks, it's only leaking outside!
2011 GMC Sierra 2500HD
2014 Rockwood 8289WS, Diamond Pkg.