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EM0480... on notch finer makes a huge shot time difference! Is this normal?

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  • EM0480... on notch finer makes a huge shot time difference! Is this normal?

    Hi Guys!

    So, I am really going crazy here... Setup:

    EM6910 + EM0480. EM0480 has 4 washers (with 3 I could only get decent grind at setting 3... now its 13 ).

    Issue 1:

    At setting 13 with 20g of coffee I get a decent shot but in 22 sec. So, I decided to make it a little slower... turn the notch to 12. Result: takes 40 seconds to get a shot and pressure is in the middle between brown / red area.

    I even tried 18 grams and 16 grams... same issue.

    How comes that one notch makes such a huge difference in extraction time? Assume tamping is the same in all situations.

    Is there an issue with my EM0480?

    Issue 2:

    Once I grind at notch 12... turning a notch coarser (i.e. 13) still yields the same results as 12... I end up cleaning everything to have the new setting in effect.. grrr

    Ideas? Suggestions?
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