I looked at this site. Who are they? I heard that Adam was no longer making them and they are now made in China or Taiwan.
The site does not give any info on this unless I missed it.
I don't know for sure, but their list of dealers are certainly legit (includes Cuestix Int)...you might be able to get the info from them.
http://balabushkacues.com/dealer-locations
Joe
Would a brand New GB-9 work for you?