I've noticed a spot or splash or something on the fretboard of my new fender w/ a birdseye maple neck. I've asked the local shops, "whats a safe method of getting it off???" They all say something different. One says dont put anything on it, one says its gotta be buffed, and the store I bought it from says I could scrub it with soap and water??? What the ???? It looks like it could be lacquer from when the guitar was made, or even as simple as a loogey. It's pretty hard though... I tried to scrape it softly w/ my pick, but no luck. Whats the best way?