I have a ecm synchronika that is 1 month old. In my search for why I have uneven extraction with light roast coffees I began to look at the water flow. I use the ims shower screen and I noticed that with flow control almost turned closed for pre infusion, the water dispenses only from the sides of the shower screen. Only when I fully open the flow control the whole shower screen start raining and evenly dispense water to the puck.

The next step was to look at the spout breaker. There I see that the water is trickling out from 3 small points around the spout breaker and from the middle. It is also completely stuck when I try to loosen it. Have already scraped it a bit with the screwdriver, so have ordered a new one and will go out to buy a bigger screwdriver tomorrow to see if I can get it out. To me it seems logical that it should sit a little looser so there is room for the water to be distributed more evenly, or am I completely on the ground?

Would have been great if someone had something a video of what your machine looks like below the shower screen or if anyone knows what it's really supposed to be like. Have seen a video on youtube by WLL that they recommend that it should be completely screwed back on, but not tight. See the video from 6:30 to 10:00. They say that it can get really stuck with coffee oils building up, and he damaged it in a similar way to what I did, but my machine is brand new, so should be so tight?

Ridiculous video
Gotta drain a machine to clean a group. IDIOTIC!
Sure way to damage a machine putting wrench on a foot long screwdriver!

The water spreader is a standard e61.
Water flow without a puck is a fools errand. It means NADA ZIP ZILCH.

Ensure that the face of the group is level in both LR & FB without the water spreader and then fuhgeddaboudit

So what you say is that how the water is coming out from the spreader is irrelevant to how the water is coming out from the shower screen? I havent found any forums where there has been a discussion about group spout breaker, maybe thats why

Off centered water dispersion covered it back in aught ait

Thank you for the link! Thats what I been searching for.