1 lx 2 months ago I'm getting around to repairing my grandfathers balalaika. He did a lot of mods (neck/soundboard reinforcement, tuners etc.) but he seems to have used a furniture finish which looks suspiciously like Deft -- you can see the drip marks. I'm repairing part of the headstock where the finish has worn off and I wanted to do it "right" and use some StewMac spray can nitro -- at least enough to protect the wood. Would using the nitro over the Deft/whatever cause any weird chemical reactions?