I just installed Monroe air shocks on the LeSabre. I discovered the level control unit missing the lever and strut that signals the pump to run. Apparently the module now calls for air all the time- the back is jacked up like a high schoolers car from the 70's. I cannot find a release valve I can access to let out some air. I don't want to try to detach the line from the shock while under pressure. Any ideas?