Just thought I'd throw this out there in case anyone has had the same issue. The couches installed in these MH's aren't exactly top of the line, and have minimal bracing in the frame work. Ours specifically wobbled side to side when you sit on it, even though all fasterners were tight. Looked at a few at the factory and they were the same. I had some aluminum angle laying around and made a diagonal cross brace that is bolted on using existing fasteners. Now the wobble is gone. Probably 100 ways to do this but this was the quickest.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.