Here are some recommendations from members for Paragon transmission parts. Please feel free to add more recommendations:
ALTO Products Corp
One Alto Way
Atmore, AL 36502
Here is their parts catalog, they have all the rebuilt parts for all the Paragon transmissions, and many other brands too.
Jack Klerk says: This is our very best group for paragon repair. . But, they are the best in the mid west By far. Our family has used them for many years. Honest, fast, good guys to work with.
www.marinegears.com http://www.marinegears.com/in-line.html Also called Transmission Marine 800-462-8848 ext 98
call and talk to Mark Waite, he's very familiar with Paragons. They have Paragon manuals too.