07/31/2008 Notices for all "USA" Scw-1 and Snbw-1 users: Users of either water block can exchange plastic tops for the full copper tops of the Rev.a model for free. Please mail us your plastic tops with the original receipt to our RMA department at 20538 Crestline Dr. Diamond Bar CA, 91765 between Aug 1, 2008 to Nov 1, 2008. No tops will be exchanged after this period and no exceptions will be made. We will not cover lost shipments. Please use a reliable mail service such as UPS or Fedex. Please make sure you have the correct return address and contact phone number on the receipt. We will ship out the replacement tops upon receipt of your older tops. For user outside of the United States please contact your reseller for exchange. Enzotechnology will not be liable for products that are not purchased from our official distributors or resellers.  Any questions please contact info@enzotechnology.com.   Sincerely, Enzotechnology