I talked to Keith at vac and he said the serial number foe the power supply and the preamp dont match. Maybe you got them mixed up with the amp you sold. If so maybe I can talk to the owner and switch it back. Also Keith said when they go to mark 3 they normally put a sticker on it but it could of fell off. Do you have a name I could give Keith just so I could verify the Info. Not that I don't trust you. Lol just trying to retain the value if I ever sell.
Thanks
Dan