From left side.
From this side it is obvious, that the float chamber is not uprightly, which it has to be.
From right side.
From left side.
Meanwhile i got the carburetor back from Faak-Tillmanns, where it was for reconditioning.
Also they changed the float chamber to a original one.
From right side.
View from inlet side.
Here a overview of known Regina carburetors and their adjustment.