360 runs great one day and then poorly the next

After a third carb was installed, it began to run much better. It's beginning to improve with every trip. Three tanks of non-ethanol fuel and Gumout.

One thing I did find out, using the the 1/4" gasket alone with the Thermoquad is a possible issue on a OEM intake. You have to use the thin gasket. It appears the bottom TQ plate needs to be completely sealed to a four hole gasket. The thick gasket is all open between primaries and secondaries.

Perhaps someone else can shed some light on this finding.