Hey now 🙂
Sorry to read of your broken shoulder.
About 8 months ago I sold my beloved Sony TCW7ESA tape deck I've had since December 1998. It faithfully recorded over 800 Grateful Dead tapes. Inevitably though, I found it worthwhile to abandon analog altogether in favor of digital.
You mention you have "several grateful dead hour recording". I do too 😊
How about you pick a show, which I shall make available to you via download link (sent to your PM or personal email). When you listen to the Grateful Dead Hour in digital format, it may convince you to forget the tape deck. Note I would like the date of the show, not the GD hour number. No obligation, and free, of course.
As to tape decks, I agree that Nak is best and that if at all possible you would want the playback deck to be the same as the deck used to record. However, in the case of the Grateful Dead this is not critical by any means. Any good quality deck - with cleaned heads/rollers, etc. - would suffice from a playback perspective.
http://halr.x10.mx/shows.html
If you get confused, listen to the music play.
🎵