So I recently had to turn the handle bars on my bike sideways to fit it into a bike box for a train. When I was rotating them (even after loosening the stem bolt quite a bit) I heard kindof a crack. They turned fine and I tightened them back up, but when I was trying to get it back to normal, I realized that no matter how much I tightened the bolt, the stem and bars still come out of alignment with little force. I think it has something to do with that little angled nut thinger down in the stem, but I don't know what to do about it (besides taking it to the shop)
Does anyone know what's going on?