Oil or Gas on top of intake???

66 Cuda 273 Commando
Holley 600cfm mechanical double pumper & Edelbrock Performer Intake. Setup is 20yrs old. Carb rebuilt about 10yrs ago.
Been having this issue for awhile. Usually only appeared after car sat for awhile in colder months. Attributed it to probably gas that leaked and turned to varnish from gaskets shrinking in colder months.
Today after I go for cruise I noticed a larger puddle than usual. . Does not appear to be oil as it lacks the thickness nor smells like gas. Is it gas that drips from carb and the heat from the intake evaporates the odor and turns into a varnish? Underneath carb felt dry.
. Just throughing spaghetti at the wall here!!.... Insight fellas??

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