Hi Everyone

I'm new to large format photography and this forum and could use some help. I recently purchased a beautiful Calument cc 400 long rail. I had already purchased a cambo T20 viewer. It doesnt seem that this viewer will fit on the camera. I was going to modify it to fit the back but was wondering if it would ruin the focusing on the ground glass if I do that. Has anyone found a way to modify the viewer to fit this camera. I am willing to fabricate parts if I need to. Should I just not bother and sell the viewer.

I searched the forum but didnt see any results that I was looking for.

Thanks in advance for your help.

Howard M.