Hello, I'm new here have a couple of questions. I have just purchased a Folmer Cycle Graphic #8 camera. It is in my estimation un-used. It really is something to behold. I would like to use this camera and need graphic plate holders to fit. Must I find Folmer holders or are there others that will fit? I know there was no standard size between camera makers. I have a couple of Premo holders that go with a Reversible Back Premo camera that seem to fit but they are not quite right. Can anyone help with the proper dimensions or a source for such holders? Thanks so much!...Chris