340SE Center channel placement question.

[watsonusn]

Ok,
Im using this entertainment center, click
and plan on putting the speaker on the top shelf, (alone). Aside from the, what i assume, obvious disadvantage of laying the speaker directly on a glass shelf, i need to raise it 4-6 inches to bring the tweeter inline with ear level, or find a small base that tilts, or a combination of both. HSU & SVS include a small tilt base with their centers, & i based my original setup on this fact. (Not knocking Ascend, this assumption was my bad!!!) Some questions:

Are there any small tilt bases out there that people use with their centers? I really want to find one of these to keep the "pointing" of the center flexible. Ive seen a few for like $120, which seems ludicrous given some great ID companies give these away for free with their speakers.

What material should i place between the center speaker & stand,and stand & glass to dampen vibrations? Or is that unnecessary?

This is going below a 96" screen which is mounted a little too high, so i dont want the speaker above the screen.
Thanks for any information/suggestions!
-D