Check the bottom of the bedroom slide outside corners. Poke around all the slides. I am a fanatic on keeping up with maintenance but found rot in those corners after 3 years. There is a Prime Time Crusader forum. Join it and ask questions, There has been an issue with wear on the bottom of the slides. Mine is one the bedroom slide and the fabric was torn. Fixed it by putting aluminum between it and the rollers. The bottom material used on my 2014 330MKS IS NOT water proof. It is called Darco. Overall a good camper and we have over 10,000 miles. I replaced the tires with LT ones.