Trial & Error
I use 1 click back from tightened for my machine but there are a lot of variables that go into it. Have a look through this as a starting point. http://www.home-barista.com/espresso-guide-skills.html
@Aroogah started
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Trial & Error
I use 1 click back from tightened for my machine but there are a lot of variables that go into it. Have a look through this as a starting point. http://www.home-barista.com/espresso-guide-skills.html