Blue Byte's track loader doesn't validate a checksum, so I'm unable to check for data corruption in the raw disk image.

There are a few extra bytes of stuff after the track data, which the track loader ignores. Possibly this is a checksum, possibly for the use of the original disk duplicator. I may have to investigate the purpose of those bytes, both for track validation, and for better re-generating the original MFM data stream from my library's encoding.