We have a 2014 Cyclone 3100. Twice now when closing the living room (main) slide, the bottom started coming in but the top got 'stuck'. The first time it happened it all of a sudden kind of broke free and popped in catching up to the bottom. Today while I was holding the button to bring it in, my husband stood outside (luckily because it happened again), he gave the slide a little push to get the top going. Has this happened to anyone else? Is there anything we can do to prevent this? Is this something I need to take it back to the dealer for?