Update...

After looking at the different files from different conversion
methods, the See You converted files are in fact missing the "G"
records. However, the DOS cmd line utilities are creating "G" records,
but the files are still invalid when submitting to the OLC. Once in a
while one will work, so this is an intermittent problem, but most of
the time we get a failure.

I have sent another email to the OLC help group with more details to
see if they can tell me precisely what is wrong with the latest files
that do have the "G" records.