So I'm the stage of clearcoating a guitar that I've been working on for a while. I'm using Krylon Triple Thick Glaze and have put on two light coats so far. I went to check it to do another coat and found that the guitar is lightly coated in a strange white powdery residue kinda like chalk dust. Any idea what would cause this? I live in Florida so maybe it has something to due with the temp/humidity, but I took it inside to dry right after I sprayed it, and i was only 80 degrees out this morning when I did.