2500 Suburban towing 31' Travel Trailer

twxsby89 wrote:
and one of the things I was told during the walk through, slides all the way open, or all the way closed, never in between..

I believe this only applies when it is raining, because the seals are only fully compressed when in the fully open or closed position. We use ours partially out frequently when stopped for lunch, at home and need to get something, etc.