Not sure why either. Everyone seems shocked when I mention nail polish remover but as I mentioned above, I've stripped 3 complete models without a problem; one Tamiya, one Academy and one AMT. I fold a piece of paper towel into about a one inch square, use just enough nail polish remover to get the paper damp and then scrub for about 10-15 seconds, repeat a few times and then rinse the part in water. The photo above was taken after the second scrub