A couple of thoughts on that. There is a company that makes a wide nylon(?) slide like skid plate for slideouts, that may be one possibility. Anything wider would spread the weight out a little and help decrease the centralized groove. They make a vinyl cutting board for the kitchen, thin vinyl, and we have used those before to protect rub areas. Just a thought. Hope this may help, Happy trails Bert
2006 Monaco Dynasty Diamond IV 42' Tag, ISL 400,(new to us), Residential Refrig, 10KW Onan, Bosch Washer/220V Dryer (previously 2003 American Tradition 40W) 2010 Chev Malibu LT