I assumed all GD7's needed those bytes for it to work. was talking to a couple of guys on IRC and they didnt have any problem just renaming either. They both had the 7.11 bios though (mine is 7.0). Im also using tsf3 to send the files over, it could be causing it. My floppy stopped reading a couple of days ago.
Could you try and send a renamed .srm over with tsf3.exe and see if it hangs?