When we had our Jayco the steps kept getting loose and bouncy, one of bolts kept coming loose that attached it to the bottom of the trailer. After tightening several times we took a better look. When they bolted the step on, they put the bolt trough the waterproof membrane. Every time we drove through a puddle, the water splashed up and seeped under the membrane. Eventually the floor inside the door got mushy. What a nightmare, had to replace that part of the floor and install a new membrane. Moral of this story, check the step bolts!
Look over the "bumper to bumper" warranty real good before signing on the dotted line. If it's at all like the one I have, there are many things that it does NOT cover. Water leaks, anything related to the sound or navigation system....Just saying!