I feel for you— but they'll have to pry mine from under my cold dead arse.
Got my Paco Pad when Jack had just started making stuff in the quonset hut behind his parents' house (as woolly mammoths roamed the landscape). The label says: Jack's Plastic Welding, Logan, Utah. The air valve is a bubbler from a Hydro-Rain drip irrigation system. Despite some vicious abuse (horse-packing, sledding down glaciers, etc.), it's never leaked, never been punctured, and (unlike the owner) still looks damn good.
On a Grand Canyon trip a few years ago, Jack noticed just how prehistoric it was and offered to swap me a gleaming new Super Paco. I told him to wait ten years, and then offer me two pads.
You'll just have to bite the bullet, I reckon.