Ok at first i thought it was his specular map, but then you said "If I get a free moment I can take pictures", so then i thought it was a mipmap, but you said his legs go black, so it must be his spec. There should be a grey texture in there (strongly resembling his body texture), color that black.
I havent edited falcon in ages, so i cant remember if both his legs and body have specular, but i recall only the body hacing it.
If its not black now, its probably mipmaps, upgrade your ASH if so.
I think the old ASH is better with that but I will try the newer ASH because I still have it and if it doesn't work I'll tell you