Not had that happen to me, it's down to a bad batch I suppose, I think if you contact KHE or pref flatland fuel? if you brought from Pat I'm sure they'd be more than happy to replace it free.
Whilst KHE sucks, their warranty ain't so bad, I guess they knew their products would fail :]]
I've had other problems with khe tyres though, had a few new ones blow up at 100 psi, tbh I'm scared sh*tless to put another mac 1 on my wheels lol.