Finally found a very experienced (20 year) watchmaker in my own country.
Not heavy mod stuff, but servicing and, depending on the movement, repairworks.
He's now occupied to fix my SMP pro Chrono with broken stem. I was lucky to find some stems on the bay.
Thanks to all guys who were very helpfull, zed, The Zigmeister,
Pugwash, who even proposed to fix it.... ??, tourbillon1801 and many others.
Thanks again!!!!