MediumRoastSteam
No it’s not coffee dust, my set up has moved a wee bit the grinder is now on the opposite side from the espresso machine, actually I cleaned everything up the other day as we were going away for a couple of days anyway the set up is relatively clean now.
I only have a hand grinder now the other commercial grinder has been moved on.
I’ve a few other portafilter baskets so I’ll try those but the problem I have is that the group head is really only designed for 7 & 14 gram baskets although I can use a 17g basket in the Elektra PF, I also have a 20g naked PF that I can use too.
BTW, I’ve only noticed the fines in the cup with the MM beans and only opened the bag last week, there’s also quite a bit of static with those beans.