Bleeding clutch

[OllyV8]

Bit of a situation...
Got engine back in after re-build, all running ok now after few minor things.
When I go to bleed the clutch fluid pee's out of the joiner from the copper pipe to the plastic T on the top of gearbox. Its just a press fitting then a clip holds it in, it seems to click in but still leaks, there is what looks like a recess where a o ring could go, ive tried it with and without and still no joy.

Any thoughts would be great,

Cheers,

Olly