2021 Raven. Two nights ago we were on top of the mountain breaking camp after ski practice. The wind was around 18 G 25. Got everything squared away inside and went to pull the top down and blown away (pun intended) by how much force it took. I was hanging from the top with feet off the ground @180# this thing should have been coming down. Tried door/vent open and it made no difference. It would only creep down slowly in a lull if I kept full pressure on it. My guess is the slight curvature of the top functions like the topside of an aircraft wing and created lift that I was working against. From now on g et the wife unit out of the cab to help. Makes me wonder if there are conditions I won't be able to get it down at all.... Met a nice woman with a 2019 Raven said she had a similar experience.