Thank you both for your help, I really appreciate it!
It's my first time, and it's really difficult. I have the tools but not the skills!
More questions:
-I don't have oil, is it a problem?
-to be sure: the jewel cup is put on the balance wheel axis, there is a little hole in the cup, do I have to put the axis inside? The domed/convexe part of the cup is looking to the floor, the concave side upside, right? The jewel is flat, I put it into the cup and then close the brass clip...
Am I right?
Can I use Rodico to keep the parts from flying over the room when putting them together?
Sorry, I know it's a simple thing for you but not for me!