Help Please: Breville 870 - Leaking water around portafilter during extraction

[Zabiziz]

Hi,
My Breville 870 is leaking water around portafilter during extraction. I already changed the steam ring but the leaking continues. Anybody has any clue what could be the problem?

Thanks,
Zabiziz

 

[MarcBeck]

How many grams of coffee are you putting in the portafilter? Could you be overfilling it?