Cruise Seems Lean

Yes the 50cc shot should be in their now and as for the squirter, it spreads the shot over all 4 barrels on both carbs. There is plenty of fuel when my foot is in it. I just question how to know where I am in idle vs transition vs main jet at that throttle position. There are 76 jets in the primary standard due to no power valve.
You are cruising on the idle circuit with dual carbs and your gearing. To determine when the primaries come in you can go to smaller jets and see when the car falls on it's face. PVs are the way to go on a street car.