Friends, I have been trying Flitz (www.flitz.com) metal polish ($8.99 for a tube) on my AC cords and it really works well. Mike Fremer talked about Flitz being used in the new issue of Stereophile. You won't believe the difference in sound you can get when you do this. Lower noise floors and more presence. Here's my procedure: 1. Use Flitz, a gray paste, on AC cord blades and ground and rub in with Scotch Brite microfiber cloth. Rub on contacts vigorously. 2. Apply Caig ProGold spray to now shining blades with white pipe cleaner to see extra dirt and get into difficult spots. 3. Sit back and listen to more music! Have any of you tried this or Caig before?