Golden Tube 300B Special Edition schematic

Would anybody know how to get a hold of the schematic for the Golden tube 300B amp?
I know they are out of business but my amp is in the shop and my technician would like to be able to read a schematic on this amp.
I can't tell you how many times and in how many forums I've asked tis question and never been able to locate one. I'd sure appreciate your allowing to purchase a copy should you locate one. Thanks!
There is a GTA 300b schematic posted in the files section of the GTA users group on Yahoo. It's not listed as a special edition but could help.