I have a Wood Dynamics ZCI in my PM66 and I'm in need of the red oak inserts that slide into the insert. I used to have the web site bookmarked but it no longer exists or I'm not looking in the right place. I think I remember a thread about this awhile back but I've had no luck searching for it. Is there anyone out there that has this ZCI that has found a source for these inserts? Has anyone tried making their own that has any tips?