Please help! I have all the fancy espresso tools and a nice grinder, but I have no idea why I don’t get an even flow out of my machine. I have a Niche grinder, I use a WDT tool to distribute the grounds, I use the Normcore distributor, and a normal dose tamper. I replaced the shower screen on my espresso machine with the VST screen and I’m using a VST 18g basket with a puck screen. I am pulling 40g shots in about 28 seconds, so I believe my flow rate is right, but I can’t figure out what I’m doing wrong!