Hi Twinster,
We go thru alot to hand test every product we sell. This this is true for both individual parts and retesting fully assembled products. Our warranty covers all products shipped from our facilities just outside of Chicago, as well as all CEntrance Authorized dealers worldwide. When you buy from us or from one of our authorized partners we have a means of assuring quality. When you make a 2nd hand purchase (on a forum/ebay/etc) we cannot assure this level of quality. Our warranty is given to all of our customers who purchase
new products. It is impossible for us to maintain this level of quality assurance from a non-authorized 3rd party selling a used piece of equipment.
Hope this helps explain the rationale behind our policy. I'm also going to send you a subsequent PM so we can hopefully resolve the pot issue.
-Jay