This is after 1 very snotty off-road ride. Riding to work and back all week, and 4 hours of SM in the rain.
Using Putoline 'action fluid'. Method, clean with solvent, rinse 3x with water. Wait till dry, submerse completely in 'action fluid', squeeze as much out as possible, let dry.
Looks to me as though water has made it to the top of the filter...