Check there is nothing to restrict the float movement, some monobloc floats foul on one of the float chamber cover screw retaining lugs inside the chamber when the carb has dried out and the float jams itself at the bottom of the float chamber.
Anything you can't see will pass the jets or block them up, either way its a simple fix. Float needles seal well enough to work even with appreciable signs of wear. Well worth removing the banjo filter and valve seat for a good looky look, some muck may be stuck on the seat.
Shame the bits got broken, like I say, assemble with care.
Good luck sorting it out.
Swarfy.
