Quote:
with JUST the mp3v2 tag set, the tags wouldn't populate properly. With the id3v1 tag set, it would.

The only way that situation could happen is if there was additional garbage appended to the file, something that wasn't MP3 audio data, and wasn't a tag. Such as album art or lyrics that were just plain text at the end (as opposed to a true SYLT tag).
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Tony Fabris