I'm going to leave the oil subject alone, but I still like the idea of leaving it as original as your conscience allows. Others may think I'm spouting heresy on this forum for saying such a thing but I'm digging my heels in. I'm not sure what I would do to it for sure if I was in your shoes. I do think you have the means to start something and finish it , that does help. I hate to see things torn apart with the best intentions and then collect dust till the parts go on a swap meet once the builder realizes he bit off more than he can chew.