Welcome aboard! Unfortunately, I did not find your model number, but by all means
do try this link:
http://www.justradios.com/schematics.html
Even though they don't mention Fleetwood in their list of makes, they might
very well have what you need. Moving from VLSI silicon to old tube radios should
be a rewarding experience, I will be glad to help you with advice whenever
possible, and I trust many others will be doing the same. By the way,
videokarma is the little brother of audiokarma (was actually part of it until last
year), which is a much bigger thing in terms of audience. I spend time on
both, and you could register with the same user name if you wish. Good luck
with all your projects!
P.S.: actually, they do mention Fleetwood in the longer list down the page.