Technician arrived on site and started performing ac tune up. Removed fan motor and started cleaning coils. No chemicals due to it being micro channel. Once cleaned checked electrical start components. No issues found at this time. Started unit and found the compressor was amping high on start up. Recommend hard start kit. All other amperages were good. Charge okay at this time. Did find a leak Schrader core and tightened it. Leak lock was present on fitting indicating a previous charge of refrigerant. Unit may have a leak but charge is good at this time. Home owner declined recommend repairs.