I'm currently assembling a P-bass project and the previous owner of this warmoth neck painted the headstock black. I'm trying to return it to natural but after stripping most of it I noticed some black stripes still in the grain, and especially some black dots that look like they are semi-deep in the grain where the neck ends and the headstock begins. Should I just keep sanding and hope for the best? Any advice on removing this with a chemical? If you're curious I posted a picture of the body, which is ash with a p-bass pickup and a thundertron in the bridge (should be interesting). I managed to route the thundertron's cavity with a drill press, a chisel and a dremel, it took allot of time but got good results. It's currently being painted Ocean Turquoise at the bodyshop.