I just wanted to share this with everyone. I found 2 replacement foam blocks on ebay for $9.95. I've been running 2 of them in the AQ 100 with no problems. The guy is a fast shipper too!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260532753554&ssPageName=STRK:MEWAX:IT
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260532753554&ssPageName=STRK:MEWAX:IT