Originally Posted by repechage

I agree but ditch the cork in the fork. It will absorb and retain water, not good. If you really want to plug it use a cheap wine plastic "cork" I just run some grease on a bottle brush to coat the section below the stem and above the brake. If you go out in the rain or wash the bike most headset top nuts are Not water tight, some grease there and a way for the water to escape is in my view best. Bikes like this don't see weather on purpose.