I am pretty green when it comes to wood, and greener still when finishing. I have built a barn door using pine, and originally stained it with Minwax Dark Walnut. Some areas of the wood didn't take the stain on the first try (I may have closed the grain sanding with 220) so I sanded it back to bare wood. I then used General Finishes Java Gel, and go figure - my wife doesn't like the color. So rather than spend another 6 hours sanding, is there an easier way to get back to bare wood? I don't want to fix the gel stain, I just want to remove it. I've read paint thinner or mineral spirits may do the trick. There's no top coat. Any suggestions?