Edelbrock 1406 secondary venturi cluster

Hi all I have posted two pics of secondary venturi clusters.
The first photo the well tubes have open ends on them while my ones have small openings which are smaller than the secondary jet. does this compromise the flow? Or is the well filled with aerated fuel which is factored in the design of the metering. the first photo I looked up on the net is an old AFB Carter carb. Reason is I am eliminating the secondary bog and came across this finding. Does anyone know if this is O.K.? or do they need to be drilled out for more flow. These holes in the well tube in the second pic are smaller the the 95 stock jets! how can the metering be controlled by the jet? there is effectively a smaller restriction further along.
Any comments will be appreciated.
Regards
Billy D...
*******************