Another update:
I have discovered that the problem I was having with the slide has returned. I was wondering if anyone else out there with a 211S is having problems with the bottom of the slide breaking loose from the side. I really use my RV, so others may not have enough stress on the couch to pull those areas apart. I have known for some time that the design appeared to put all the weight of the couch on those two areas of the slide when the area is flush (and the rollers don't even make contact with the carpet). I hope they have corrected this, but I am going to have to use another means to fix it than warranty, since it is out of warranty now. I also have developed a slight propane leak, which I will have to troubleshoot with some soapsuds. Otherwise, I am still really happy with the unit, and am really getting all the use out of it - I have about 36,000 miles in 14 months of use! My last motorhome was a 28'Winnebago I bought new in 1987 and kept for 15 years: it had 45,000 miles on it after all those years. This unit will be long gone/worn out by then!