Silver club ac tune up on 2016 Carrier split system, spoke with homeowner and there has been some extra noise from the condenser but it has been running and keeping the home cool. Started outside and cycled system on and there was a vibration noise from the condensing unit. Tightened fan motor lugs 1/4 to 1 full turn in all 4 points and noise went away. Checked system level and washed condenser thoroughly. Checked dual capacitor and contactor and electrical connections. Checked disconnect and connections. Checked both surge protectors. Went in attic and changed customer supplied 20x24x1 filter. Checked ductwork, seals, evaporator coil, drain line and blower. Flushed drain with 1 gallon of water. Cycled system on and checked refrigerant pressure, temperature split and amp draws. System is working well at this time. Spoke with customer about surge protectors and expected life for them, also talked about filters and customer is going to pick up some more for the next time we are out.