alanhrc wrote:At ignition on, the servo does not move.

It doesn't unless the powervalves aren't closed.

alanhrc wrote: At 2000 rpm the servo moves to roughly the middle position. A few hundred rev's more and the servo returns to the closed position.

This is normal behaviour.

alanhrc wrote:Where can I buy non standard main jets? I currently make my own, but, I can only get drills in 0.05mm increments, apart for a few letter sizes.

Here, part number is 99-101-393-SIZE

alanhrc wrote: just above 2000 rpm the servo closes and remains closed no matter how much the rev's rise.

How high have you reved it while watching the power valve motor?
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