I just bought a used one. Came with two cubes and a queen pad. One of the cubes leaks. It appears to be one of the fittings at the base where the hose plugs in. The spring has failed and is not closing the valve like it should. I emailed support to see if I could buy just that piece but they said no and that I’d have to send it in for $129. Anyone have a parts cube they’d want to sell me that piece?