Well Wilfred, my pessimism was misplaced. I re-sent the same email, but to "Technical Support", and this time it fell through all the right holes!
I got back a Schematic, Manual, Component List and pcb layout. Elements and barrels are still available, but tip stocks are running out, and will not be replenished.
All in all EXCELLENT service for a product that's been in production for about 20 years!
WELL DONE DSE!
David