I have a 2012 Thor Challenger 37DT 3 slides. I have had trouble with the dinete slide rattling while driving. After taking it to CW several times, it was decided that slide certain parts had to be changed.
Thor said they installed a new slide system and they were having problems with the design. They sent new parts to CW and that resolved the problem.
If need be, have your CW dealer call CW in Lakewood NJ at 732-905-8063, they should be able to advise your dealer.