If you/your mechanic do decide to look at float level, first make a
fixture to show the operating float level.

Drill a small hole thru a 1/8 inch dia NPT pipe plug, and epoxy a 1 ft
length of clear flex tubing (such as model airplane fuel line) into the
hole.

There is a 1/8 inch (I think) NPT pipe plug on the back of the carb
that is ported into the bowl. Remove this plug & screw the fixture
plug into this port. Hold the tubing up to see where the float level
actually settles - and decide from there.