That should be enough jet I believe, both HS and pilot. Maybe too much jet for HS. I think 162.5 + MUST open HS screw some amount you can get enough fuel. If 167.5 seems adequate as is to keep plugs brown (not too black) then leave them.
I'm running 80 pilot with using a-pump, part throttle is SLIGHTLY rich even without airbox. My n/s is 2.0 and metering spring 80gram, HS jet is 162.5 and accelerator pump is functioning.
a-pump doesn't contribute anything in case of applying throttle gradually.
HS venturi becomes dominate over 70~75% throttle, LS circuit loses all influence beyond this point. If hesitation occurs less than 75% throttle, suspect low speed circuit.
IMO
