Ceol Mor's companionway steps are part of the engine box, and are professionally varnished; very pretty indeed. But I want to glue Treadmaster to the appropriate surfaces, leaving the remaining varnish as intact as possible. I can scrape/sand through the varnish so I can use epoxy, holding my breath all the while. Or do you folks know of an effective adhesive I can use without removing the varnish (possibly scuffing it only)? I note that I can buy patches of Treadmeaster with an adhesive backing, but I already have the sheets in the right color. This is not on deck, so has minimal exposure to sun and weather (we all know a companionway does NOT mean no exposure to sun and weather). Thoughts?