Just following up - as I noted in the other thread I linked in my earlier post, I found the emails between the local station engineer and myself, and one of the things in those emails was a link to the original article I found that led me to discover the PSIP error that was affecting my WMC setup.
Unfortunately, that was 4 years ago and the link was dead, but I tracked it down on the Wayback Machine. For anyone who may be interested, this has more detail about what was going on:
And here are is an example of the TSReader Lite output that shows the mismatch between TSIDs in the stream that was causing trouble:
