HI there. I have a Sunbeam EM7000. Over the last couple of weeks I noticed that it was getting hard to get pressure in the group head and grinds were getting in the coffee. It's gradually got worse now to a point where the pressure dial won't move at all and the coffee is full of grinds. I have replaced the blue seal and there is a very positive seal - there is no water being forced outside the group head and into the cup. Nothing has changed beans or grind wise. I've also cleaned and descaled the machine. It's as if somehow water is getting around the portafilter inside the group head to come out the spouts. Could it be warped from bashing to get the used coffee plug out? Help please! We're locked down and reduced to a plunger!