[vancelot69]

Thanks jeffahart!

So, the reason for my query is because since I took off the 4-hole gasket, I was afraid that the open gasket would allow cross contamination (for lack of a better term) of the air/fuel mixture, so I thought I needed the 4-hole gasket to keep them all separated.

Then I got to looking at my pics again and noticed that the manifold has a trough between the two smaller holes and it looks like the open gasket that came with the carb has a notch cut out to account for the trough, and the carb has two big holes and a channel in the same area, which I assume are for the PCV fittings on the carb base, which would be closed off if I used the 4-hole gasket that doesn't have the notch cut out.

I feel like I'm over thinking this, but I have zero clues when it comes to carburetors. I did rebuild one over 20 years ago, but I didn't tune it after I installed it, but it seemed to run ok, so... haha