Mine is sagging ,too (2018). It's seems obvious it's not worth going to the dealer for a warranty replacement since the replacement pieces seem no better. I like the industrial grade Velcro attachment idea. Seems easy enough, and not only is it not a permanent adhesion, but it's 100% reversible. Given I'm also 90min from a dealer, its cheaper to fix it than the to drive all the way there and back for a covered service that probably won't make a difference. Seems like a no brainier to try.