Carb conundrum

This is the Weiand Stealth and a oem style TQ gasket. I pushed the gasket to the left and to the right and ran the pen in close. This gives a thick line that I have shown the measurements as recorded with a mic. There is very little room for error and a minimal sealing area, but it is doable. Or should be.

Do you have a TQ to put that gasket against? I wonder if the throttle bores stretch to the outer limits of the spread bore gasket. Maybe try and line a square bore gasket up to the bottom of the TQ and see how much of the gasket you would need to trim up to just uncover the throttle bores. Then, line it up to the manifold and mark that.