Thanks to everyone's help, I took the plunge and disassembled the shade.
For those older Fleetwood products, the Fleetwood shade is different from all the videos. No loop around with strng. They terminate at the rail. At this age the rail was little resistant to removal. No tension spring at least on a smaller shade.
Tim, with co-pilots Bert n Ernie-
'94 Pace Arrow 33X, 454 7.4L; '05 Jeep G. C. LTD