Both bikes are parked side by side, under roof, so no problem there.
However, I know he likes to wash the bike more than I do, and he spends a good amount of time doing it, but I've never seen him spraying the bike from underneath.
And after his last wash, the bike has been ridden several times.
Looking at the air box design, air intake comes from a read facing tube, just above the front cylinder.
In the Glee, the air intake is located on the top cap of the air box.
Could rain or splashed water make its way up to the Vee2 air intake?
I'm rather curious about this 'wet filter' thing happening to someone else in this forum. If no one else is suffering from that, I'd consider the washing habits as an option.
I is poor doge... I no know bikes!