Hi all - I am working on a 12 size, 7 jewel Waltham movement and have overcome several different issues with it already. One of the last I can see now is the upper 3rd wheel bushing is very worn and egg shaped. It isn't stopping the watch but the side shake is enormous at probably 25% the width of the pivot, it can't be helpful. Is it possible to stake a hole like this closed then broach it back into round, or is the only real fix to replace the bushing? This looks like it is pressed in rat