Sean, for the most part the Spitfire underside got weather from oil streaking back along the fuse from up front. I have a Watanabi book that shows that part in to be pretty heavily weathered. There is also the normal weathering that takes place along the wing and stab from flight, take offs and landings. Not to mention the powder burst smudges at the leading edge and back. Regards BobH... BTW.. only a few more weeks to Delaware!!! ..