As I don't have a True Second only, I would have to,persuade
the JLC Boutique here, to lend me the TS.
Alternatives would be 1/ to do it in the watch store; 2/ just taking my WT, which also has the True Second module.
The latter would be quite trivial - Guess, I will try that this week !!
Results then, ida & Pat. Pend by Nico, procedure by hs..
Will keep you posted !!
Best, hs