I have just cleaned and replaced the mesh on my original arcadia screen doors on the patio doors. When I did this, I found that the top tension rollers and the bottom wheels needed replacing. Just to save someone else some time if you do this, you can find replacement parts through prime-line at http://www.slide-co.com. They have links to various web sites that sell there parts(There not exactly cheap).
The parts numbers on my doors were b-520 for the top tention roller and b-560 for the bottom wheels.
Hope that helps someone out there
Thanks very much! Did you by any chance also find the rollers for the actual doors - the catalog also has some hardware that says "For arcadia" but I am not 100% sure those are the right ones.