So my 4x5 came in today and I was all excited to open it up and start playing with it, but (and ill admit I had a dream about this) the focusing screen was shattered. The camera is a Calumet with a nice 150mm lens. I have reached out to the ebay seller but I dont expect much on that front. Considering it came with the case and lots of backs and a clean bellows im in no hurry to return the whole thing. I know that postal insurance claims can be a dead end so it is what it is at this point. I know that these screens come in all different sizes (even though they are all 4x5) i know the edges can be different. How interchangeable are they? am I totally out of luck if I can find another calumet one? will just about any one fit? Heres the damage.