chuck,
with four webers you have 4 pump bypasses and 8 pump jets. So I would first try to tune with the 4 bypasses instead of the 8 jets, which btw also cost more.
But I have to wait to do that until I have my engine repaired.
Not very inclined at this moment to get the engine out. Feeling quite lazy lately.
I live in Mallorca, which is part of the Balearic Islands right in the middle of the Mediterranean Sea. Sevilla is on the Mainland down south. Maybe 1.5 hours by plane. Not too far away if you compare with distances like NY to LA.
Stefan