An amateur named Glebert Kaplan did the second with LSO in the mid or late 80's. I do not own the recording, so I do not have the booklet that comes with it, to give you more info about the recording. But, I did listen a couple of times in the music school library at my alma matur. It is well recorded. But, performance-wise, it may not stand with Zander's, Rattle's, Solti's, Tennstedt's, Walter's, or Klemperer's. Nonetheless, good performance, though, especially considering that he is only an amateur Mahler enthusiast. I remember that Kaplan made some grandiose claim in effect that Mahler would conduct the second as he did (since he studied extensively the contemporaries of Mahler as well as Mahler himself to prepare for the second -- an eccentric claim considering Mahler's eccentricities in comparison with his contemporaries). Thereby, some controversies surrounding the claim.