up the steaming temp by 10 degrees and knock down the pump recovery time by -.2 or -.1 - quicker and a bit wetter. The thing then steams like a bandidt - I prefer -.2 recovery. Up brew head temp if you need to...probably will by 2 or 4 degrees over standard.
Other than that the EM6910s baskets are fine and almost identical to standard Italian baskets - or at least the ones I sourced from Barazi in Coopers Plaines Brisbane.
Dose high and tamp firmly - bout 30 pounds - twist 90 degrees and lock in tight. Grind to suit depending on how the pour goes. These machines will consistently do a normal shot in 25-30 seconds with great crema and taste using fresh beans. Cheers