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Setting jets and floats

Fuel System

Vehicle Information: Model: 911S; Year: 1967; Body Type: Coupe; Engine (type, size, modifications): 2.0L; Total Mileage: 135,000;

I am rebuiding the Weber 40 IDS carbs and have never adjusted the floats. The shop manual in somewhat confusinf. If I measure the height with the floats all the wat up they are off about 4mm. How should I adjust them? Bending the arm is mentioned in the manual. What about the jets. They were way off too and required alot of washers. Is that normal? Thanks in advance for bailing me out again.

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