So I have come to conclusion that there is a gap between what I am seeing on the ground glass vs whats coming on negative. After wasting about 10 sheets of film at f5.6 150mm I have arrived at this conclusion. So frustrating has anyone had similar issues? Whats the fix?

I still cant get it to close no matter what I do: https://www.largeformatphotography.i...45A-wont-close