the new Fortis crown is an entirely different construction, and doesn't screw down
the watch still doesn't run reliably - I take it apart again
that's better...
the luminous compound is a bit brittle
luminous compound stabilized
the tube that holds the fourth wheel sits too low, and the fourth wheel can sometimes touch the third wheel
I press the tube out a bit
tube now sitting correctly
the proof is in the pudding - the watch now has a higher amplitude, and maintains it.
movement going back together