When I worked at Burroughs Corp. (1958-61) I serviced bookkeeping machines. The time allowed for one repair was ridiculously short. I went to Church with the man who had written the book and asked him how it could be done so fast when it took more time that that to get the carriage & case off. His reply was "their machines didn't have those parts on when they were timing them" I think he may work for Fleetwood now.
I would suggest NAPA with their books of power window pictures. I would be willing to bet Fleetwood used an existing part there.
