Has anyone successfully used the Breville Smart Grinder with the Gaggia Classic and the non-pressurized portafilter? If so, and I am exerting >= 301bs of pressure on the tamp what might I be doing wrong. I'm getting 10 sec pulls regardless of the grind setting. The pressurized portafilter works fine.

As a test, I bought coffee ground at a local Starbucks and their Turkish coffee setting clogged the machine and their espresso setting gave me the same 10 second pull.

Thank you.

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