if a piston orifice is overfeeding, stuck, etc, would the system still work..just not as designed? Our system has always struggled to cool house if outdoor temp gets above 92 or so. Has been checked numerous times. 1 thing that stands out is..the superheat is always normal but subcooling is always real low, usually 2 or 3 degree subcooling. And the delta across coil is only 15 degree.