Pubul, good point...I want to believe that is true, but the self-destructing audiophile in me always has to tweak and upgrade, and play with things. : )
Tonight I added sorbothane sheets (cut into small squares) with adhesive backing to all the edges of the shelving on my salamander rack. Again, not much of a difference, just small from my first listening session. It did however do a great job of reducing vibration in the shelf though, I can feel the difference when music is playing.