Good morning all... but it could be better - I have a Gaggia Classic and MDF which on grind setting 6 used to give great espresso. Now, for reasons beyond me, the water runs right through. I have graduated down all the way to 2 on the MDF and it looks pretty fine grind. I always let the machine warm up and give it a good purge shot before use. Coffee is Illy or Intelligentsia and only ground on the day of use. Please could you let me know what I am missing out on or whether something might have been damaged. The water runs through the grounds with seemingly no resistance.