I recently did a major cleaning on my Alembic. I removed the strings, the tail piece, nut, tuning pegs and took the bridge apart. I used pure lemon oil on the fretboard, a guitar polish on the body, neck and headstock and used a multi use metal cleaner on the brass parts. I used a dremel tool to clean and polish the hardware including the Alembic logos. The logos showed signs of polishing so I used a soft electric toothbrush to get the polish out of the small crevices in the logos. I put everything back together, put new strings on it, adjusted the height, set the intonation and put a new battery in it. The bass sounds better than ever. It's amazing how much tone and sustain you lose due to a little dirt. This will now become part of my annual routine. I have owned this bass longer than any other's and I can't ever imagine getting rid of it.