I have an IGO-L with two coils and some silica wick. I pulled off the cap and drip tip and then put all 3 pieces in a small glass filled with some cheap vodka. I let it sit overnight, took it out and then let it dry. There are rust spots all over the inside on the cap now. There is no rust anywhere other than on the inside of the cap. Does this mean it wasn't properly treated when it was made? I'm thinking it's just low-grade clone (got it from fasttech). Any input/suggestions?