Hi, I have recently got a Gaggia Classic Pro. So I am quite new to espresso. After I pull my espresso shot, the grounded coffee puck has imprints of shower screen (photo attached)
Is this normal? If not, how do I solve this?
I am filling it up with 18 grams of pre ground coffee (commercial espresso fine grind) in a pressurized basked.

- It looks like the stock baskets that come with the Gaggia are a little too small for a full 18 dose. - Superb. So I will try with 16 grams and a coin test 
 
- I’m probably the last person that should be answering this, just getting into espresso myself, but you can buy a mesh filter that goes between the espresso and the machine. They’re pretty inexpensive and can help protect the screen from making contact with your puck. I believe they’re also supposed to help with water distribution? 
- If you dose by weight, you will have differing volumes in the basket with light roasts compared to dark. 
- It’s not supposed to touch the shower screen. Mine does sometimes, too. Try decreasing the dose. Remember that light roasts weigh more than dark roasts per volume unit, so 18g of a dark roast is higher volume than 18g of light roast. - While not specific to your basket, it illustrates the differences.  



