Injector return pipes

[kneale]

Hi all, thanks for having me. I'm getting desperate!

I have an ongoing issue with leakage from my injector return pipes. I purchased some cheaper ones, and had leaks, so bought some bosch ones. 10 days and it has started leaking again. Is it the injector that'satfault? 2012 A6 avant c7 3L v6. As you look at the engine, it's the far one, on the right. 

[Steve Q]

Where abouts is it leaking from? 

Leaking injector seals are common.