Coffee Appreciation

Got a fair old bit of channeling there, and your puck is wet. Try stepping the amount your grinding up a touch. You want to be at the point where the coffee isn't touching the shower screen when you load it, but then when it swells once it's wet it should then touch the screen. Then your puck will be dryer, and less channeled. You might need to grind finer or turn down the pressure on your machine if possible.