Winter project carb rebuilds

Thanks Ben. Ok so i measured new needles/seats and compared vs old. There is different dimensions. Not much but a slight difference.
I will post measurements in a bit.

Another question.
See in the pic the "valve"...and where it mounts on air horn.
Is there something that goes under the hole for valve in airhorn? You can see hole in gasket (3rd pic) that leads to carb body. Anything go there?

RedFish said

welp... mine is/was a Carquest kit, has different numbers.
I don't see a check ball on the drawing either. Backflow check is in fact a needle/pointed slug deal.
As for seat height, I couldn't finger out wtf was wrong, until I compared the pull offs with the new. Their books show it the be the correct kit for 4305S. Regardless, this one part was wrong.

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