carbs

Whats the best way to remove the pressed in pin for the floats without breaking the tangs off the carb?

Get yourself a spring type centre punch.That way you just push the punch pin into the float pin until the spring snaps and the float pin will release.So much better than taking the chance with a hammer and punch unless you have great coordination and nerves.

This kind of thing.
https://www.amazon.com/TEKTON-6580-Automatic-Center-Punch/dp/B0037UUO60