Most companies won't warranty a compressor unless you replace the condenser and drier. No sense leaving the evap core in there.I would flush the whole system. get new compressor, accumulator/drier, orifice tube and o-rings for all things you remove. fill with recommended and quantity oil. also with dye to help display any leak. reassemble and take to shop who can evacuate system to check for leaks. if no leaks fill with proper refrigerant and enjoy.