2016 Trane heat pump is not cooling as it should, system requires a 16x20x1 filter. Filter in system is currently clean. Return fins of evaporator coil are clean as well. Leak searched evaporator coil and am getting no leaks off of the 2016 aluminum based coil. Gravity fed negative pressure drain line is clear. Drain pan is clear of any major debris and water spots. Blower capacitor is reading 13.2/15 MFD across it. Outdoor system is moving heat well, though the pressures are slightly high. Trane calls for a 10° subcool +/- 3°. Subcool is at 10°. After cleaning coil our pressures stabilized with a more desirable subcool. System should have significant attribution to cooling the upstairs.