The roofing stuff doesn't work nearly as well.  The Q-Pads have a mixture of
other materials in it, that all resonate at different frequencies, and that is
what cancels out the noise.  It's almost like a stick-on sandbag.

This is the cheapest I've found, will be trying it soon:
<http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=268-020&Did=7>

Bill Marshall
85 GL Tiico "Pandora's Box"
Aurora, IL