Hi all. I recently took some photos using my 4x5 Crown Graphic, handheld. It was mainly to test out the accuracy of the Kalart RF and to experience how shooting LF handheld would feel like (fun!). Anyway, it turned that the focusing of my Kalart RF coupled with the Optar 135/4.7 lens that I have is more or less spot on. That's great. However, it seems that my top mounted optical viewfinder (the one that's used for composition) is out of whack. I'd frame my subject nicely the way I want it & after processing the film it turns out the top of his/head was cut off and the subject would be off-center to the left. I'm not sure what's wrong. As far as I can tell, my front standard is straight. And it seems the optical viewfinder is fixed pretty tightly to the camera body, i.e there's no play or movement whatsoever. So, what can cause it to be out of alignment? And how can I get it re-aligned so that I can use it to compose my handheld 4x5 shots accurately? For reference, my Crown looks as per below.