Help! Two questions about my brand new Keystone

Everything is drained and winterized, I was just worried about the inch of snow and ice on the roof. It turned out our trade in looked great but had a rotten roof. Now I'm paranoid about the roof. I just wonder if some ice got hung up in the slide mechanism as it came out. Once it went out and dropped down to where it should be, it came in nice and ended up flush outside. I'll call the dealer tomorrow.