Slight leaking on UM2+ printhead

[markusa380 0]

I recently upgraded my UMO with a modified version of the UM2 Extruder Upgrade Kit, and found the printhead below the TFM coupler to be leaking slightly:

 

 

Is this acceptable? If not, how do I fix it?

Edited September 16, 2018 by markusa380

[tinkergnome 927]

It doesn't look like leaked plastic on your picture, is this perhaps only the copper paste what you spot there?
A leak is very uncommon, if the nozzle is correctly mounted.
Can you make a picture of the printhead from below and from the back?

[markusa380 0]

I don't have any leaking on the printhead, so I think it's the copper paste, I wasn't aware of it!

Thanks!