All of those ideas sound good but what actually happens in a lot of cases is the same thing that happens in a bucket of finish. Ever get that dried skim on top and still fluid under neath. They seal off the out side and don't let them dry properly under neath. Although those sanding sealers and polyurethanes sound good, they are a problem waiting to happen. Take a scrap piece of wood, soak it in one of those oil base sealers, let dry then leave it in a bucket of water over night, then weigh, measure it. Musky Glenn