cvs rsync corruption issues

[Lee, Tony]

In using rsync to replicate cvs across different servers i am encountering issues where the target server has corrupted files. Most
of which seem to be binary files. The files in cvs repository have daily tags as a result even though there is no change on the file the tagging
info is rsynced over. Are there any suggestions on how this could be fixed. I havent tryed -c or -W flags yet. And was hoping for a fix without a performance hit.
 
cvs [server aborted]: unable to parse /etrade/cvsserver/cvs/af/pkgs/af-apps-test.tar.gz,v; `author' not in the expected place