Sorry about the crude drawing of the gasket but it is the standard style with the four cutouts. Note that these gaskets only one of the bottom ports to be exposed. Upon further inspection, it appears that both the base holes travel up to the base of the carb into a chamber. This chamber has one small hole that penetrates the throttle bore while the other has a larger hole that enters the accelerator pump bore (which sucks the diaphragm down and holds it). Gasket covers one yet they purposely engineered two. Some report cutting the gasket for the second port which in theory would provide a steady vacuum? I was under the assumption that once the accelerator pump was pulled down that the metering rod would also come lower therefore restricting low idle flow. As I push the diaphragm down the metering rod doesn’t come with it. Rather the metering rod appears to rest at its lowest point then mechanically comes up once the throttle moves (thus opening the lower jet allowing more fuel. At idle, which the throttle plate totally closed, I’m getting a slow drip from the main jet. Which continues to drip after shutdown. Then fuel accumulates and travels out the base of the throttle plate rod, etc. Note the carb base to throttle body base gasket also has two holes for the vacuum to travel.
