I put a new winding stem in my Hamilton 917 and it worked fine for a few minutes and then it wouldn't wind. I could pull it out and change time but when pushed back in it won't engage in the winding mechanism. I had backed to set screw off a little too much and it came out. I examined it and after removing the dial I saw how it goes back and was able to fix that. Did I miss something? Maybe the stem is not far enough in? I just can't figure it out because it worked and then just stopped. Any tips?