I finally got around to starting my uds build. I have a new unlined barrel. I got all my holes drilled and I built a fire in it and let it burn for several hours. There is still some paint on the outside of the barrel that I plan on removing most I can. My question is do I need to do anything further to the inside? I dumped the ashes and rinsed it out. The inside is black from the fire. Can I coat the inside with oil and do a seasoning burn or do I need to clean the inside so it's shiny again? Is there anything that I'm missing? Any tips or pointers appreciated. Thanks!