Hi, welcome first thing I would check the supports under the water tank, we have a 305 (similar) & they were falling out. The slide out was leaking, the D seal on the vertical had a gap to the top seal letting water in. I mitered the seal & siliconed, fixed. Make sure when you move the slide out after it stops hold the switch for a few seconds you will hear them shut down, this keeps the motors timed. The bed was horrible, changed it right a way, other wise its been a good camper so far. Ours came with 7K axels, one piece plywood floor so it seems a little over built based on its listed weights, one big bonus for toy haulers. We did have a lot of surface rust on the chassis, must have been a winter delivery, I am cleaning it up & repainting. Good luck.