Quote:
Originally Posted by knighty
......you need to unscrew the brass cover just above each throttle butterfly......then count the amount of progression holes.......most webbers only have 2 or 3 progression holes.......the later webbers have 5 holes.......5 holes basically kills that notorious dip in power and makes your engine drive much better, the progression holes ease the transition from the idle circuit to the main fuel delivery circuit......5 holes delivers more fuel into the "dip"
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Got nothing to unscrew on mine, they are plugged.