I am involved in the manufacter of two distinctly diferent types of refrigeration. Both have short suction lines ( under 10 feet/ or 3 meters) unless they are built for remote installation. Our normal display case have a fan coil and works great at 10*f of superheat. We have recently built some static coil 33-37*f deli cases for meat and cheese. They get good and cold but the static coil presures run much lower. Should I be concerned having a cut out presure of 4 psi gauge to achieve the temps required or is there a better way? Ken