Swap the pump out for a genuine item. I had the same style as you currently have installed and it was no where near as good as the geuine ones. Is you engine the early or late A12. [guessing early] I have an old spare one that works fine, but could do with a clean, All yours if you want it for free. Cosidering your "K" appears to be as near original as possible, these aftermarket pumps just look out of place..