Go to a dive shop & see if you can still find lead diving weights (cheap), wrap with vinyl tape and glue felt on the bottom. You can move around to find the balance point.
vibration counter weight
I'm using Bright Star Big Rock/Air Mass under my CD player, the trouble is that the transformer is located on the left side of the CD so that when the Bright Star combo is inflated it sits on a ptich to the left side with the right side being higher. I am thinking of counter weighting with a 2.5-3 pound weight (I have already confirmed that this will level the pitch). What I have thought of is getting a peice of metal cut to place on top of the CD of either Stainless or Aluminum (in the proper weight and put silicon feet under it) ideally I'd like to have Lead (don't know if I can get that) but I want to select a metal that won't attract EMI/RF plus I have to paint it and want to keep it as unobtrousive as I can, so I don't want to have it be to thick and tower above the unit. Am I thinking correctly or is there an alternate idea someone can suggest for me to level this for me?