Being too cheap to buy new rack i've been scouring ebay for a rack that might work.
Luckily found an AMCO Mark 4 Motorcycle Luggage Rack Mount Kit #25 on ebay that was made for the Ascot so that made adapting any rack a lot easier. Found a KG universal type rack that had been on an '87 Honda CX500 and it looked like it might adapt. It does, though at a bit of an odd angle. Consulted friends about trying to bend it into flatter angle but was advised to declare victory. Function over form! pdf shows installation.