Depends if you know any friendly aircon guys. My old local was willing to clear the system after I fixed it myself. I needed a condenser and a few hard lines to sort mine... these days I probably need to add a compressor to the list.been looking to see if i can sort out the aircon all by my ownsome.. seems like its not viable
i'll need to reverse flush the system (excluding the compressor, condenser and drier) then put a vacuum on it to test for leaks and also to dry the system
only then can it be re-gassed