2 barrel Nikki flooding

I'm flooding gas in the carb; can see a puddle in the intake. I put a new needle in it and checked that the float does indeed float level in a container of water.

The float is plastic. I don't see anything in the manual for float adjustment.

I gravity feed from the gas tank, if that makes any difference. It's on a 20hp Vanguard.

Any suggestions to cure my problem?

2 barrel Nikki flooding