Thanks for your input, appreciated. I changed it anyway since I had the spare part ordered already. Appears to work fine and like you said there is no performance gain at all. Given the machine is virtually a year old and the manual mentions changing this from time to time I did it anyway...
First post on here!
I've just picked up a used Barista Express (about 10 months old) and want to ensure everything is in tip top condition. I'm looking to replace the steam ring located inside the group head, has anyone done this and if so did it improve the performance / restore lost pressure...