Because I had figure it out how the power the CDI with the use of the high voltage coils from my 3MA Ignition tester
I could measure the CDI in live action, witch gave much more questions
Here you have a 18,5 degrees at idle.
(could rotate the disc a bid more to get exactly 18 degrees, but its just for a indication)
Here you have my opened CDI in action.
Clearly working as measured (with the jump)
Here you have a un-
Its working the same also with the jump.