Sounds about right ck5533.
I only wish we had a way to use ETA, or DG28xx, or Miyota 8215, or Segull or ANYTHING other than a rough 1030 that will need a $ service. Heck even a non-Auto manual wind if would work.
It would almost be worth the money when you get the case & dial, to buy a ton of cheap auto movements and see if there is any hope. I still have some Vostok 19.8's that I often wonder about. Heck, no Datewheel to worry about, this should be easy. I am not convinced we have exhausted all the possibilities yet.
IMHO, this watch is all about Case, Dial and Bezel. Who cares whats inside.