I have a problem but I don’t know if it's the grinder (Infinity) or the espresso machine (Gaggia evolution).
To be able to even get a shot (2oz) from my machine I need to set the grinder to the last course. ans this is with a tamping pressure of 30lbs.
I guess since some of you have the setting in no less than fine that the problem may be with my machine water flow through the group head and not the grinder.
I just ordered the decalcifier to clean it up and see if that helps.