Well, it probably is not textured quite as well as it could be, I suppose my texturing is probably ok as long as the prop is turning, I mean, I'd have motion blur happing there too . . . but the spiral is authentic, it was used during wartime. If you happen to see a film of with a ME 109 in it, like in the movie "The Memphis Belle", or some authentic war footage, you will see it . . . I am sure it was done because it has a psychological effect on the enemy! After you have seen it in motion, it is kind of an interesting effect . . . .