Okay here's the shop manual for this carb it's pretty straight forward on how to adjust it. Unfortunately unexpected guests with unneeded Pabst showed up last night, and postponed my work so I'll go and fiddle around and see what can be done right now. The picture I scanned turned out small but shows you that you bend the float tang and measure the drop 2 1/4. I'll try and reduce the float level and disconnect the return line and pray to the Oldsmobile Engineer gods that it works. And just to clarify when I say jets I mean the 4 Venturi things, and I'm pretty sure their gaskets are not leaking. I'll post a link of a video to show whats going on just to clarify as much as I can.
Heres the link to the photocopy---->
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