Sounds like you might have coffee oil build up. I would suggest soaking the Brew Head Screen and filter holder in a coffee oil remover by www.urnex.com
or dezcal. Remove the screw if your filter basket has one. For home use it would be good to clean this every week or so. You can email me for more info: [email protected]
. You also might just try purchasing a new filter basket (along with cleaning the Brew head screen and new basket).
Further technical info can be found at:
41 Woodbine St
Bergenfield NJ 07621