Well that's a bit annoying! had the stock outside in the weak sunshine, as UV and air helps the oil dry, but its started to rain so grabbed it in and after wiping off I found that there are droplet marks on it, re applied some linseed but they are still there!

The only thing I can think of is to tint the linseed with some oil based artists paint and hope it tints out, want the stock slightly darker anyway.