Mate, thanks heaps for bringing this thread back from the dead (wow, 5 yrs) because i have the exact same problem
My right knee getting wet in recent sydney rain.. Although im afraid that because i havent noticed it with the hard top on, maybe the hard top (and the two side strikers) pull the hard top down harder than the soft top and squash the A-pillar together a bit more... so this week i had only soft top up and hence the wet knee?
Anyway, if anybody has clues... i might try cleaning that non-door channel down the A-pillar tomorrow. ive heard a coat hanger does the trick, but carefully so as not to tear the rubber.? any other suggestions?