Since I'm not a con artist my first instinct was to be honest with the guy. I kind of forgot but he probably deals with all sorts of con artists purchasing radios and tweaking on them in a drug-induced stupor and then complaining about warranty issues wanting to send the radio back for warranty work. I suppose I'll have to be more discreet next time I ask for information like that. I did tell him my purchase would depend on the availability of the schematic and service manual and without those two items I would not be making a purchase.