David: What you illustrate is a different set-up from my 1903 model 00. But I think there is a similar problem, and that is getting the parts of the safety linkage aligned when reassembling the gun. I think this is a delicate operation. If things don't come together just so, they bump into each other and throw off the alignment. Then the safety doesn't work. I believe that is what Dan is telling me. And that seems to agree with my experience.