G'day Norm

You have asked a most interesting question.
I feel compelled to say something - as a non expert...

One of the features of the carby was less fewer parts.
I feel they are a 'reliable' carby ... but not a 'performance' carby.

I have just updated the record on the G4 carby.
I know it needs more work and input.
I feel it was revolutionary ... but a compromise in terms of performance.
Adjustments were limited.

G4 Carby Design and Bulletin

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Jack