Air suspension not releasing air when vehicle is shut down. on 1991 Lincoln Town Car

I recently replaced both air shocks for the rear suspension. The repair went well and the bags filled with air no problem. Since the repair the compressor keeps filling the bags until they are full and then shuts off however, when i get out of the car the air suspension isn't releasing the air from the bags as it should be. Currently my air bags are fuller than they should be and my air suspension warning light keeps coming on. Any ideas on what may be wrong and how to fix it?

Asked by for the 1991 Lincoln Town Car
Is the dryer, solenoids, air lines, and everything else working properly in this system????

I would call Strutmasters if I were you. They can advise you on what it is that may be causing this and give you expert advice