Your '71 ThermoQuad is a one year only design and does not use the x-style o-rings used on the '72-up carbs and the bowl does not have the epoxied wells either!

So my advise would be:
clean the bowl well inside/out,

be sure the accelerator pump nozzles are clean,

set the float level to 29/32" with the top bowl gasket on the top casting and the top casting inverted,

be sure to return the accelerator pump check valve under the accelerator pump nozzle cluster with the pointed end down,

straighten any bend to the metering rods,

remove the old needle seat gasket when you remove the seat,

use a light oil on the threads of all screws when you assemble the carb,

drive the old accelerator pump assembly/well cover out of the top casting with a punch; strike the exposed end of the accelerator pump stem after you remove the pump arm and 'S' link, driving the pump straight through the top casting. Do not attempt to 'chisle' the pump well cover off.

And make sure all old gaskets 'match' the new ones, David.