Zombie thread, but after 4000 miles the seat on my 2018 is getting unbearable. It had water in it from new and now I feel that the foam is just getting worn out. It has also been separating for some time. Has anyone come out with an upgrade?? I hate to spend money on a replacement if there is something better out there! If not, I may take it to an upholstery place and get something more comfortable made for it