I just started having some issues with smooth tops using 464. I was pouring between 135 to 140 and now my tops are not smooth (they were better when it was hotter weather, but never perfect). I tried to level with a heat gun, but when I do the tops look really grainy, which is better than cracked looking I guess. Is there a technique to use when using a heat gun? I use circular motions just over the top of the candle. In addition can you get a smooth top by using a heat gun or is it grainy because of the 464? I am going to try pouring hotter, but I am not sure if it will work, since the top of the range for pouring is 140. Thanks everyone for your suggestions!