New Delonghi Dedica coffee machine - help!

[WhenInDoubtSmileandPout]

Hi, I've just got this machine and I find it dribbles the coffee out. I used to have another Delonghi which was excellent and the coffee always came out with pressure and a nice head of crema.

I think it might be me doing something wrong? I tamper the coffee the right way (I think), so it shouldn't be that. But perhaps it's something else I do? I use Lavazza ground coffee, in case this matters.

[TR888]

No idea but I was planning to buy a Dedica for my birthday...