No problem Andy, I had a quick look on the website too, and it looks like they are IC bearings only now! I shouldn't think you will have any more problems, and TBH I doubt if you would find these bearings even as "new old stock" I have serviced many of this type of motor, and it was very rare that the bearings were worn to any extent. Give it some oil now and again, and it will be fine.
Edited By Phil Whitley on 04/11/2018 18:58:01