Performed tune up on 2 units.Checked all major components: Freon levels compressor , fan motor , capacitor, temperature split, static pressure,rinsed condenser coil, flushed drain line , checked filters . Based on readings capacitor on unit 1 is reading 21 uf out of 40 uf which it should be only 5% less than the rated value . This means that capacitor is going bad and need to be replaced . Other than that everything is operating as designed. Custo,ear agreed to go ahead and replace capacitor