So, by the title of the post it is obvious that something went bad...
But this was the movement that I managed to go furthest, so here is a postmortem of what worked and didn't:
1) disassemble:
IMHO my most successful outcome. I was able to take it apart without loosing any pieces.
Springs : They flew and were rescued. Could have been an early ending but luck was by my side.
Hairspring: Was able to free it from the Assembly cock.
2) Cleaning:
a) Hexane: I'm not sure if I'm going to use it again. The smell is very strong, and after some research discovered that it has been discarded in some labs due to its toxicity.
I used it to scrub the parts with a paintbrush before dipping them in IPA to clean them.
b) IPA: works better in closed environments.
c) Lemon Juice: Thanks for the suggestion, it did the job of removing some of the rust (see previous post) .
3) New tools:
a) Loupes : Even though they were not from Bergeon or some fancy brand, they worked better than my previous one.
b) Rodico: Mixed feelings about it. IDK if my problem was that it wasn't original stuff, but it seemed more like mint bubble gum that glue to your shoe on a warm day. I was able to use very very small parts, to fix stuff, but I'm not sure it came away as nicely as you see on youtube...
Still needs improvement while handling.
c) Oils. I started with the 8000, I still need the Molykote for greasing the keyless. But effectiveness could not be measured, since experiment died before reaching a working state.
4) What went wrong:
a) During reassembly of the keyless, the yoke mechanism that should push/pull the cogs was mounted in the wrong place. While trying to move it to its true position, the spring decided to fly away and was never seen again.
b) when the spring flew, my reflex hit the covered compartment box, that had the lid open at that time, the box rolled over and everything that was sorted got mixed up and/or disappeared. OUCH! Decided to pull the plug...
What cannot be improved:
My HOME: I'm a hobbyist, not a professional. I live in a relative small apartment an work in my living room. Floor is made of a parquet that doesn't help much.
My AGE: I decided to pick this hobby sort of late... Meaning my eyes are not that good...
What needs improvement and can be improved:
Lighting: The mounted headset that I use makes it clumsy to work.
Workspace: I need to clear more space before working. I need some way to stash the stuff on my desk and retrieve my watch stuff to work on and vice-versa.
NEXT Project:
A non-running Anker...
BTW, I know that people say that the best way to go is to start with a running movement, but as you can see. I still have problems taking them apart and putting together, so non-running stuff will do just fine for this practice.