I think it all depends on how large the "stab holes" are and how obvious they are. You might try using plain clear nail polish, the thinner the consistency the better. Let the polish "drip", in large drops, into the deepest parts of the holes. Don't brush. Let a big drop or two dry for awhile, then drip another one or two. Let it dry well and gradually over a few days let the drops build up until the hole is filled. I've done this with little knicks and it worked okay......just a little time consuming.
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