I just got a piece returned that was framed quite awhyle ago. They are realy old documents, hand written on what I believe to be animal skin parchment. They were attached with parts of photo corners trimmed to fit specific areas. The tops of both documents are cut in a scalloped pattern making it hard to mount. Thay were at one time folded and were framed with spacers, which would be great but the weight of the paper(?) is pulling it down so at the creases they are saging. If I try to mount them as they were before they will just sag more over time and fall out of the mounts. Any ideas would be greatly appreciated. I'm at a loss on this one.