In my experience the calibrated bleed holes in the crossbar are
not to be removed during a rebuild. That is part of the air horn
assembly and are not serviced separately. If you've disturbed
that you may need to get another carburetor.
But, don't take my word as gospel, I'm sure an expert will be
along with a better answer, at which time I'll bail out of the
discussion and let them take the reins.
dg
