Hey all. I have had a pair of Kenetrek Hardscrabble Lites for a few years now. The rubber rand has started to peel away from the leather in several spots, allowing the boots to take on some moisture during wet trips. I plan on using some 3M marine adhesive to rebond the rubber to the leather. Do I need to debur and sand down the leather where it will be bonded so that it is smoothe prior to applying the adhesive and gluing the rand? Anything else I should do in order to make the bond permanent?