This is Feather Palm wax from CandleScience, the pillar is 3 x 3-1/2 and I'm using CSN-11 wick. The first burn was 3 hours...then blew out and burned again later for 2-1/2 hours. The 'hole' is about 3/4" deep (as showing in the photos). Since this is my first Palm Wax pillar, I'm not sure if it's suppose to leave a thick shell like this. Can someone please advise? Should I wick up? Thanks much!