To bcp19: I am a registered user of the Butterfly Labs site, so I used the RMA form.
To byt411: Guess what. They are proving you wrong so far.

Butterfly Labs got back to me and stated they will accept my RMA, very professional and very quick response. Sent them my shipping address since this is second hand and I am now awaiting further instructions. I know there are a lot of posts out there regarding poor customer support, but so far top notch.