Many years ago we had trouble with a slideout in a new t5th wheel trailer. The dealer told us to take it to the factory for repair/adjustment; saying their technicians did not work on slide mechanisms enough to know what to do when.
We did go to the factory, and when I asked the service manager there about what I was told concerning the dealer techs not knowing, he said that was right.
Bottom line I would just tell prospective buyers the slide drags on the floor if/when they ask, and price your TT accordingly.
BTW there is specific product sold for this problem, and is what I finally would up buying:
https://www.amazon.com/AP-Products-0...4143821&sr=8-7
until I could get to the factory.
I actually wound up using them all the time after the factory replaced the mechanical workings for the slide room.
__________________
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy