chokehold

Hello everyone, I hope someone in this forum can help me. I am looking for the high side service port adapter for a 84 4runner ac compressor. I have come to the conclusion that might be causing my ac system to leak. I can not find where my system is leaking,it is slow,but fast enough for freon to escape in a few days. I have put dye,replaced evaporator,condensor,expansion valve and bought a rebuilt compressor,but system will not hold vacuum for long. Reason I suspect this might be at fault is that one time when I removed the hose, I noticed an aluminum sliver come off this area and possible causing the hose not to seat right. Also I am running out of options. This service port is the type that a bolt holds the hose in place to the compressor. If any one has this available,can you please give me a shout and maybe we can make a deal. I have not been able to find this locally. See pic for part I am looking for.Thanks