OJS-2.4.7.1 Unable to download revised versions of articles - CRITICAL

Hi all,
I think I have this issue fixed. In an effort to lock directories down I went a little to far.
I made /files owned by root as well as the journal directories below /files.
So
/files is owned by root
/files/jjj_files owned by root – This was the issue. This directory needs to be owned by www-data.

Once I change permissions upload and download are working again.

Thanks,
Edward