Ok, how clean does the inside of the drum need to be? Here is what I started with: Honey drum with a painted liner. I burned it out, did the whole thing with a weed burner. As I burned off the outside, the paint blistered up on the inside as well. After it was all done, I hit the inside with a power washer and got it pretty good. Right now, it is smooth on the inside, but is also blackened. Do I need to wire wheel this thing until the whole inside is nice and shiny, or, as long as there are no rough spots, aka, blistered paint, am I done?