While I found where OSX stores the user printer preferences, but copying a "working version of preferences" to the user workstation and directory doesn't set the preferences.
Still investigating. May require a restart when doing this remotely. . .
Full system restart or just the cups service?
Just did a full system restart and no change. While the plist file is there, and the user has owner access to it, the changes don't appear to take effect.
Not sure why.