With a new ground glass this back is usable as it is right now, though the indexing pins are loose. The camera that I will be using this reducing back with has been restored and is pretty "tight" for a vintage camera. Will using worn reducing back appreciable increase the risk of damaging the Kodak 2-D camera? Any other reason to restore this reducing back prior to using it? Have a good thread/website to recommend on camera restoration that covers wood and brass restoration well?