I just ordered a Thermostat at a well known Pantera parts vendor, but obviously got the wrong one, that does not block off the hole below. Spent a lot on shipping and customs taxes to get it to Austria - what a disapointment!
I found one in Australia on Ebay UK: https://www.ebay.co.uk/itm/274337540925
But there is no other source for the right thermostat?
Thanks for any help here!