Help! Two questions about my brand new Keystone

It's just at freezing so I had to try the slide again. I ran it out and back twice and it hung up both times. When I could see it start to tilt, the top hung up, I would stop the pump. then I bumped the pump button and it would jump up and retract normally. Now that I can see what's happening I can keep an eye on that slide as it comes in. If it continues to do this******come spring, I'm taking it back to the dealer for sure!