Hi all. I’ve recently been digitally archiving my old 4-track master tapes from the mid-late 90s, and I’ve run into a bit of a pickle. I’ve noticed that for many of the tapes, the fourth track sounds thin and hissy, with greatly diminished low end. At first I assumed that the tapes themselves were simply deteriorating with age, but when I play these tapes in reverse, the same track (now track 1) sounds nice and full. What’s particularly puzzling is that I have a handful of tapes that don’t suffer from this problem at all. My 4-track machine is a Tascam 424mkIII, and I’m transferring to Pro Tools via the tape outs. I’ve tried using the effects sends for track 4 to see if that made any difference, but it sounds the same as the tape out. I borrowed a friend’s 424mkIII hoping that maybe it was just my machine, but I ran into the same problem. Does anybody have any ideas about what I can do to fix this problem?