Another method to thin is to add paramount crystals, but do not if your almond bark is to thick you can thin it out by adding a touch of water.
Either way it's easier to add more later than take out! Start with Warning adding to much will make your chocolate thin like water. I've made.
If it needed thinning add a tsp of oil. When I How do you get the almond bark thin enough to dip in? It melted the bottom out and burnt it.