Just one more thing to check as you get ready for the season: I found a nut underneath the camper (never a good sign) and found that three of the four bolts holding the retractable step have lost their nut. Fortunately the bolts are sort of captive in the space so they did not fall out entirely. The lock washers are not doing their job. I replaced them with a nylock nuts, but I suppose loctite would be good too.

Comments
https://tab-rv.vanillacommunity.com/discussion/14761/loose-nuts-on-pull-out-step
Glad you caught it before it caused an injury...
A good item to add to the seasonal check list.