Stella Blue
Oct. 10, 1976
Oakland-Alameda County Coliseum
^^^ I've done a lot of speed-correcting of Dead shows in my time. I never noticed DiP 33 being out of tune, so I did a few tests. I gotta look into it more, but it seems to me that, if anything, DiP 33 runs a bit fast, not slow. Most of the tunes I tested (Mama Tried, Ramble On, Stella) were all about .03 Hz above the "correct" pitch of the tunes. And to my ears (when I play along with the music), the uncorrected tracks sound more in tune to me than the corrected tracks do.
I'm not sure what led you to believe what DiP 33 runs slow. Again, it seems to me to be pretty much right, and if it's off, then it's fast, not slow.