On my 14, I replace all of the tec body scerws that hold the underside sheeting that Bobby mentioned with stainless steel tec screws. I went around the entire MH including the wheel wells and replaced all of them.
It wasn't hard, I used a roller stool and just scooted around the entire MH.
Chuck in SW FL
Digital 2021 Cornerstone "B"
A "Digital" 2019 Cornerstone "B" Traded
A "Classic" 2014 Anthem 42 RBQ---Sold