Still bloody leaking. Any tips please guys? I fitted new orings yesterday, the top one is leak free. Bottom one is not. The oil cooler looks new-ish as well, threads don't feel mangled either.

I'm taking the new a/c condenser off again now as I don't have octupus tentacles to get into the gap.

Double check the the pipe has seated, it sounds like it’s not fully home, but if could feel that way, loosen slightly, give it a wiggle and see if it suddenly finds a new level.

All sorted, believe it or not it was the top one, it wasn't fully home. It felt tight yesterday but tightened up quite a bit more. Time for leak testing!
Thanks mate

Bloody thing started moving and leaking again today. I think I'll need to fit a fatter o ring tomorrow and try again.... luckily it's Wilko's cheap oil