After fiddling around with grinding off the edge of the basket a few times and further polishing off a little more from the brass disc it doesn’t look as if they are the problem. The basket still sticks and there is adequate clearance between it and the filter head.
I am sure now that the basket is sticking firmly to the black sealing gasket in the filter head and a little grease a couple of times a week seems to fix this.
Am I the only one who has ever had this problem?
Lelit Elizabeth (2) , Eureka Oro Mignon Single Dose, Mignon Mk2 (converted to single dose), Aerolatte Mini grinders(2), cafetières, Bodum K1218 Vacuum