I just bought me an old 93 bronco tweed wich is in very good clean condition. I have been looking for nitro lacquer but it is practically impossible to find here in Holland. Can I use polyurethane clear coat lacquer instead? We have wood floor lacquer, boat lacquer etc. available. some waterbased, some solventbased. shellac in flake form is available if you look hard enough but it would be costly by the time you got it ready for use. ( seen 65 euro for a litre) I only have one shot at doing this amp so please advise. Thanks!