On arrival for maintenance upstairs system compressor thermally overloaded causing me to move to an evaluation driven call. Upstairs system had a blackened/pitted contactor, an out of tolerance dual run capicator and did not have a compressor saver. Upstairs metering device is a piston, had a low side saturation temp of 34 and a suction line temperature of 66 giving us a superheat of 22. Using chart superheat should be at 10 given indoor humidity and outdoor temp. This shows system low on refridgerant. Downstairs system also had a blackened/pitted contactor and a non functioning compressor saver kit. It has a txv metering device and a high side sat temp of 70 and a line temp of 71.2. Given Goodman's subcool range is 6-8 a subcool of 1.2 also indicates low refridgerant. Due to age and condition I recommended speaking with a comfort advisor about replacement on these two systems before sinking money into repairs. On the final master bedroom system it had a superheat of 4 indicati