I have Pierburg 1B2 carburetor:
I recently bought new waxstat - part No 75 above (coolant heated). My current solution is to block petrol flow to element 82 that tested bad according to the my manual (and is electrically heated), and fixed open choke flap (with electrically heated bimetal spring).
I can do this since I only need to run on petrol for few minutes to warm up slightly, and then switch to LPG.
I checked the gasket between upper and lower part of the carburetor, and it looks OK.
But I would like to fix this. Any ideas what to test and how.