Hi GMKF,
Thank you for responding and the link. I will give it a check. I am lucky as my wife is German, so on some occasions I am able to convince her to call German workshops

She does it bit more gladly since we have plans to run 1-2 different classic rallyes this year in Germany. I also got a link to Reiner Telkamp which we contacted today and sounded very fine.
Let's stay in touch,
Parias