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Pradeep Sarin

Balance wheel axle wobble normal?

Question

Watch: Waltham wrist watch from about 1950's.

Used to work fine.  Opened it up to clean the crystal from the inside and the dial. Now the problems are:

 

1: Runs face up, but not face down (the hands are off, so its not the hands sticking.

2: One jewel fell out - can't figure out where its from!

3: Examined the balance wheel motion under a microscope (when its running facing up. A slight wobble is noticed. 
     Video is posted at: Link to video of waltham wrist watch balance wheel wobble (watch face side)

     Zoomed in video at: Zoomed in view of balance wheel axle wobble

4: Is this wobble normal? Is there a jewel supposed to go in there, holding the pivot in place? 

 5:  For comparison, here's a view of the balance wheel axle from the back side of the watch, where there is a jewel in place:

    balance wheel axle from back side of the watch

      

And here's a  zoomed picture of the the jewel that fell out: it's 1mm diameter, and has a 3 pronged sleeve around it:

dropped jewel

 

Questions:

1:  is the balance wheel axle wobble normal?

2: Where does the jewel go back in?

 

I am a first time poster to this forum, so please be gentle. Have a liking for old mechanical watches (and old things in general). I do have access to fairly sophisticated workshop facility in my lab, so I can make whatever tools are required to press-fit jewels etc.

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