for whatever reason, after 10 years or more of use, the damn squirrels have chewed the hell out of my Gorilla and Rivers Edge treestand seat cushions this year. I cannot find any actual Gorilla cushions, but would be happy with any comparable replacement. these were pretty comfortable cushions and lasted a long time, but some of them are so chewed up that I cannot use them. anyone know of a quality replacement cushion that is about 16x12? I'm not interested in the cheapie ones I've found, and the only decent one I've seen is from Slumper seats.