disco 2 fuel leak

Hi, don't know if anyone can help me at all. .....I had a leaking fuel pressure regulator on my td5. I bought a pattern replacement unit and swapped it over. All seemed good for a while, until it started leaking again. I then changed just the regulator part. Again all fine for a while, but is now leaking again a little. Wondering if the fuel pump could be at fault. Any thoughts would be much apreciated, as this is becoming a pain.
Thanks in advance.

its not uncommon with replacement parts by an oe version, it will be poor regulator parts, unless the pipe fitting or diaphragm o rings are leaking

Thanks.....think I will have to splash out on the genuine parts in future. I just wondered if it could be getting excess pressure some other way?Buy cheap....buy twice eh!

Another example of you can not afford to buy cheat s__t (stuff).

Replaced mine last year, big difference in price but went for the genuine item. Lsak sorted so happy with that.
There are very few bits which I would consider buying pattern. Engine related ones are not one of them.
It's a shame you've found out the expensive way.