I slide my pillars across a 'warm' pan until they are level. (Or as level as I can tell). This also melts the wick in with the wax. Someone had a leveler made out of sheet metal, I think. It was a pretty cool device but I can't remember who.
Have you ever lit one yourself? Just wonder how they do without the holder. I'll be using those come winter! But not with this 100+ heatwave we got goin....