I have a 25 HP copeland , using HP 80 , The suction is 5 psi . the temperature is 33 F on the suction side at the compressor ( I can't get at the evaporator without removing product) . the discharge pressure is OK but the temperature is a little high . I was going to open the TX valve a little more . should I check anything else before I start crawling over 10,000 pounds of half frozen fish.