I assume chmod recursively via ssh would result in the same behavior as using the “File Station UI” to set permissions on a folder (checking the “Apply to this folder, sub-folders and files”).
The problem is that when I do this, the next time I create a folder or file via the nfs share, the folder/file is still created with the “Default Linux Permissions” (i.e., admin:users 755/rwxr-xr-x & 644/rw-r–r–).