Ok, so my bro bought this p-tex to repair his base, and I guess he read somewhere on the internet to use a candle, and just drip the p-tex in. So I give him a hand, we end up setting the p-tex on fire, after being on fire for about 30 secs the p-tex finally starts dripping, but when it drips its got all this black ash like burnt stuff with it. So basically, I'm if this is supposed to happen (I assume not), and what to do to prevent this.