Hi Dave, a couple of questions first. *You will notice from the link that you pointed to above, that the extraction pour took approx 20secs from first drop.
From previous research into this matter, I believe that general consensus is the pour should be somewhere between 20-30 secs (some may indicate a smaller window than that ?). *How long is yours taking ?
From your description of 2% crema, Im guessing that you are taking less than 20 secs ? (Yes / No).
If so, your grind may be too coarse, or your tamp too soft.
But then again, I could be full of crap :-)
P.S. My EM0480 is set to 14 (but that doesnt mean that yours should be the same).