HI. I just need to put a coat over a headstock decal to protect it. I have a nitro-cellulose finished neck. I really don't want to have to spend close to 20 bucks on a can of Re-Ranch Nitro just for the decal. Can I put a light spray of Satin Urethane, which i already have a can of, over the Nitro neck on the decal? What about wipe on poly? Thanks