My friend has an old Hondo Sting bass with what I think is a Schaller bridge. It's missing one of the rollers that sit in the string saddle. I've looked online and cannot find parts anywhere, only full bridges. Any body know where I can get just parts? I checked the Schaller site and it's all in german of course, I don't sprichten z duetch, near as I can tell they didn't sell parts. Any help would be greatly appreciated! Thanks.