If you value the stock be VERY careful. IMHO, oil or not, the chances are 50/50 you will chip out the opening. Over time, the wood swells or is crushed in normal service to overlap the edge of the escutcheon nut. If you look closely you can see this on most stocks. If you do not shave or trim this overhang back before you tap out the nut you will split out the wood. If you leave ANY overhang you will chip out the wood around the opening - period. This will happen and don't let anyone tell you it won't. Shave it carefully with a very sharp pointed hobby knife and finish it with rolled up fine grit sandpaper but do not leave ANY overhang, and I mean all the way down to the face of the nut. I am not saying make the escutcheon opening bigger than it was originally - just make it as big. All that being said, when you chip it out your stock save the sliver and superglue it back on. Personally, I would not remove the escutcheon on a collector grade stock unless it was absolutely necessary to keep the carbine held together. HTH. Semper Fi.