i am interested in this topic as well, because i just started working with a 2 group automatic Z9 with more than a few problems (leaks here and there) and i'm frantically scouring the city for someone who can repair or give an estimation for one in or around Montreal. i know this machine has potential far beyond the watery espressos it's spitting out right now. ps can you tell me the name of the part in photo#67?