That is looking good. Did you check the flatness of the top of the tank, and the underside of the carburetor body? If they are not flat, the results will be dire. See
https://www.outdoorking-forum.com.au/forum/u...ds=Diagnostics+101&Search=true#Post22526

The project seems to be going well. I trust you followed the manual when you re-attached the carburetor to the tank? If you don't use the diaphragm preload process B&S specify, the automatic choke will misbehave.