I refinished a Beretta 686 SP1 28ga stock because of water spotting. I followed advice found on this forum by cleaning off the old finish and hand-rubbing in 4 coats of tung oil. It looks great. The problem is that the wood apparently was very dry (even though the gun is practically new) to start with has become swollen as a result of the oil penetration, particularly in the thin areas where the firing mechanism fits into the stock. There is now about 1 - 1.5 mm protrusion of the wood above the metal of the mechanism. Is there a non-destructive way (not involving removing the offending wood by sanding or filing) to correct it?