Thanks for the info, James. Perhaps I'll stumble across it one day in a secondhand store, or it may be reissued. My vinyl copy is in good shape and I have other good performances on CD, too (Kitaenko/Gürzenich, Chailly/RCO, Ahronovitch/LSO).
Japp van Zweden conducted it here in Chicago a couple years ago. His solution to the weakness of the finale was to chop off a good deal of it and replace it with the coda from the first movement. Impressively played by the CSO, but I don't think that worked at all.
Venturing even farther afield, has anyone heard the live DSO M6 with van Zweden, or Luisi/VPO? The latter was at the Nashville Symphony Store on vinyl, and I believe it's an analog recording.