Replace it. If you find a cannister(try used parts?) you can easily put it in yourself. It sits perched on a little ledge up underneath and uses a large zip tie to attach it to the metal bracket. The bottom lip fits into the little ledge bit and then get a long big zip tie. I found one like 10(?) inches long and had to cut it to make it skinnier to fit in the little holes in the bracket, it goes thru the holes in the bracket, attach the tubes, set it on the ledge and tighten the zip like a belt around a belly,- thats it. Once tightend it stays.