For 8-track tape supplies, such as new foam pads and splices, we can highly recommend Jon at 8 Track Avenue. You will not be disappointed by the professional quality of his supplies. Jon also fixes tapes inexpensively.
For player repairs, we recommend Dr. 8 Track himself, Henry Gabel. We have had personal experience with Henry, and with a nickname like “Dr. 8 Track” you know that he has to be good! See contact information below:
We also hear that Kate’s Track Shack does good repair work, and their professionally refurbished players have an excellent reputation.
There are a lot of Facebook groups dedicated to 8-Track tapes, but we can highly recommend Patrick Krake’s “8-Tracks In The Wild” group at https://www.facebook.com/groups/1052108655530679