Quote:

The only place this should even be a concern is on low speed transition, in which case the elevated slide/needle theoretically caused by a too-light spring could induce a transient rich condition.



I don't see how it could ever go rich. Fuel is pulled into the airstream by the venturi effect. It always lags behind throttle opening. This is one of the reasons some carbs have accelerator pumps.

'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy