we built our home ourselves about 9 years ago. we had a problem, we thought with one window, water would leak on one side of it and run down the wall when we had strong winds with the rain, or heavy rains. after taking this window out three times, we finally realized the problem was a crack in the log (which we have since caulked numerous times). But the water left an ugly dark water stain on the logs around the window on the inside. I NEED HELP! how can I get rid of the stains, i don't want to paint the logs their too pretty. any ideas?