I've been soaking the stock heads in a can of acetone / terpentine. It has pulled most of the oil out. But, I didn't have the whole stock soaking. Now I have a distinct oil line near the grip. I can get a bigger container and more solvent, but, I'm wondering: you guys have any experience with over cleaner? Or, here's a thought, I used Pour N Restore on my Trex deck grease stain, and it really lifted the grease out. Thoughts?
http://www.pour-n-restore.com/oilstain.htm