On new builds are you guys putting any undercarriage rubberized coatings on? This dynatron stuff comes to mind. I have some and mine is just painted, but its new metal now and I have the opportunity to do it now with good adhesion.
https://www.amazon.com/dp/B005RNFBDG/?tag=fabo03-20
https://www.amazon.com/dp/B005RNFBDG/?tag=fabo03-20