I never had to weigh it down, it just relaxed on it's own. Car sits in the garage and I leave the door open a lot. It got pretty hot in late July, early August and the afternoon Sun is hard. I think it just got to hot and started breaking down. It was a big surprise when the lid would not open and thought maybe the latch messed up. Much to my surprise it was the gasket and I really had to pull hard on the lid to get it open! I cleaned the bottom of lid with goof off and got all the remnants off, then rubbed the seal down with some seal conditioner I use on my camper slide seals and it has been ok since, but I open the trunk a few times a week now. Hopefully the Steel Rubber gasket won't do the same!
Yes B7 is under rated and looks awesome when done correctly O