I have a rheem split system unit with scroll compressor. Leaked check with nitrogen and found no leak with 300 lbs. of pressure. So pulled a vacuum on the system and weighed in refrigerant. When I fired it up I was getting 35 lb suction and 300 lb. head. Pumped down system ,replaced txv on indoor coil, and installed liquid line filter dryer. Pulled a vacuum and fired it up, initially suction dropped to 10lb. and head was 200 lbs. so added little freon to try to raise the suction pressure but the head pressure rose to over 350 lbs. and suction was about 30 lbs.and cut out the compressor on high pressure. How can I tell If it is a restriction or if there are moisture still in the system. Help will be greatly appreciated.