Read my previous post and use the second link to disassemble the group. Examine the ends (tips) of the valves and the condition of the rubber seals on them. Examine the metal seats in the group upon which the seals rest for damage or wear and generally for scale or debris buildup. Look at the disassembly images in my file and compare valve sizes and spring sizes. A properly assembled E-61 with good parts should never be able to dump water out the end of the group during an extraction as the video shows