No water coming out of the group head?

Your problem is either the brew solenoid or the brew switch.

I have a similar problem to the above question, but mine is flowing but just in my mind i dont think it is enough, and it seems the a bit more water is coming out the exhaust port then i remember, The espresso shots are coming out beautiful but i have to have a courseish grind to do it. I have a Unico Splendor 1group machine, they have faema e61 group head. Solenoid done, last year, seals last year, rubbers all new.... so am baffled..any help would be greatly appreciated...