https://andersonpens.com/repair-supplies/
Page 2 and 3 likely have what you need but the J-bars aren't all grouped together, so browse a bit. They mostly by length, so measure one from the model pen you want to replace, and you can always contact Brian if you are unsure which to purchase.
Happy restoring!
Cheers,
Jon
Responses
www.newpentrace.net