[Five]

the carrier is also missing so it might be due to originally being captured to analog...

anyhow, the lineage on this according to what I read here is silver>CDR(1)>your ripping prog>flac

for ttd we are looking for a non-bootleg source without the eq & limiting (and whatever else the bootleggers might have used for fx), or failing that a direct rip from the silver using an error-correcting ripping program such as EAC including the log to verify that no errors occured. while your copy is not mp3 it is slightly tained by the extra generation and since this was broadcast somebody taped it, or failing that surfacing silvers exist in the hundreds (or more?) which can be located and ripped direct perfectly.

so you could seed this at another more slack site, but in the interest of sharing the best version available I would just try to find another more pure copy and post that instead.