I ordered 2 kanger t3 and they were leaking like a faucet after only 2 weeks, looking online I found the coil upgrade kit to go from t3 to t3s ordered it from DESERT VAPES. Got them yesterday and no leaks what so ever, so if u got a T3 that's leaking just up grade it. Works flawless and it only cost 99 cents to do it.