Hi great machine. But I have a couple of questions on one feature. When you remove the water tray, there is a pressure adjustment screw on the bottom right of the machine.
1. What does the adjustment screw actually do?
2. What does it do to the taste of my espresso when it is fully closed ( clockwise) or fully open.
3. Who sets the setting, wholelattelove techs or factory? Mine was about 3.5 turns open ( counterclockwise from full closed) when I received the machine.
Thanks and once again, great machine!