I can't believe there is actually a thread on fixing this
that sh1t wont melt back together, but i'm sure you could put a glob of plastic epoxy on it. Autozone carries it. I used it on spider cracks on a pool sand filter where the head selector valve bolts to the tank- that was squirting out a 30' stream of water at 24 PSI. Its held up for 3 years so far.