Hi would appreciate advice on how to re proof a Belstaff roadmaster 2 jacket. It is one of the old waxed cotton ones. What is an appropriate touch up treatment? Should I just go to the drizabone store downstairs and get a tin of thier oilskin treatment? I ask as their are refernces online to a "special blend of waxes" - is it just maketing speak for the same stuff everyone else uses but at premium prices?