I have a montgomery ward heavy duty air compressor 2hp , 8.p SCFM at 40PSI , 6.6 AT 90PSI 20 GALLON ASME TANKSERIAL NUMBER 11077-461446 AND IM TRYING TO ADJUST MY CUT IN CUT OUT ON THE THING , MY PLUMBING IS ALL ORIGINAL I BELIEVE. THE AIR CONTROL VALVE HAS A METER RIGHT AND KEFT OF THE CENTER CONTROLLER WHICH IS A t handled twist valve ? Off the left side lies the pressure release valve and to the right lies the 3 way house connections for air tools.