Very nice pictures as usual, Paul. That makes it much easier to see what is going on.
The float bowl gasket looks OK, it has a design that doesn't call for it to have a smooth surface as long as it is slightly soft. The top of the float bowl appears to have a raised up ridge all the way around it, and this ridge presses into the deformable gasket material. You can see the impression it has made in the gasket.
How did the main jet and emulsifier look before you cleaned them? Unless they were slightly gummed up, the cleaning you've done won't make any difference to how well the engine runs.
