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Service call that the AC System was not cooling properly. Upon arrival, spoke with Homeowner about issue. Found system was set to 71 Degrees and the Indoor Temperature was at 73 Degrees. The Indoor Coil was leaking and the Auxiliary Drain Pan was full of Water. Cleaned water from the Auxiliary Drain Pan. Inspected Coil and Filter to ensure they were clear. Measured Supply and Return Air Temperatures on System which was only producing about a 10 Degree Differential. Checked Air Flow Settings and measured Refrigerant Charge. Liquid Pressures/Temperatures were normal but the Suction Temperatures were very low and the Indoor Coil Temperature was at about 9 Degrees. Air Flow Settings were slightly lower than recommended for a 4 Ton System. Increased the Air Flow speed and continued to monitored. To test the Metering Device, added 12 oz of 410-A Refrigerant to the System. The Liquid Pressures and Subcooling Increased while the Suction Pressures remained the same. The TXV has a restriction wh