Here are 4 links to try, 2 are German and have been selling Wersi for decades (They will reply in English) 2 and Wersi forums.
www.wersi-hochrhein.comwww.replay-serviceteam.deThis is to the Wersi USA Forum
http://wersiclubusa.com/ where Curt the owner has been in regular contact with Wersi USA.
This is the General Wersi Forum
https://www.tapatalk.com/groups/wersiownersforum/ where a where a number of owners have owned a wide range of Wersi instruments.
Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).