Here is feedback regarding the carburettor adjustment. I ended with getting it running better than ealier with a combination of knowledge and luck. Knowledge from other forums and also a book from Haynes that is specifically about carburettors. In this book this particular carb. is described closely and it all helped. I never found the original ajustment marks on the housing to ajust the automatic chocker, but managed to get it to run well.
Main issue to get it to run well when cold and in "freigang" is to have the "initial Throttle opening" ajusted to 0.8 mm - mine was closed.
Good knowledge was also found at "
http://www.racetep.com/webjettune.html" and "
www.webercarbs.com"
Ok all for now - thanks again for your interest, Best regards
Per Fleinert