I may run a bead all the way around like you said. I didn't the first time because I thought maybe if water was in there it would drain out the bottom. I did however heat them up a bit but probably not enough.
We drove up to Lexington and back (light rain most of the time) and they only fogged a little, on the inside corner again. I'm assuming because that is the coldest part (the low beam and corner seemed to clear it up) but I don't know. After it sits for a while it goes away.
The weather is supposed to be nicer for a few days so I'll keep an eye on them. If it doesn't get better or it get worse I'll pull them off and seal all the way around for sure.
I wish it was easier to take the headlights out though. I can do it fairly quick now but it is so much stuff to remove to get them! lol
2006 F150 FX4 Super Crew - Bilstien 5100s leveled 2", 35" KM2s, 4.56 gears, Detroit locker, Eaton E-Locker, Traction Bars, AEM intake, Xcal 2
2010 VW Golf TDI 6MT