Want to Buy WTB - Korona 8x20 rail, or for-parts camera

Just got a Korona 8x20 that is missing both front and back rails. I'm not very familiar with this camera. From what I've read the rear rail is not common. The front rail is necessary and I am missing it.

Am curious about extension rails too if they exist.

Does an 8x10 Korona use the same rail size? I am also curious about alternative solutions for my missing rail.

Check with Richard Ritter, http://www.lg4mat.net