Down in Knoxville

I am sure there is a song with that title somewhere. None the less, the cache is not located at the published coordinates, please do a simple calculation to get the final coords. Happy hunting.
Calculate:
a = 1
S26 01.ABC E028 01.DEF
A = First letter
B = Last letter minus four
C = Seventh letter minus four
D = Last letter plus one
E = Fifth letter minus three
F = Ninth letter minus ten
Please replace the cache exactly as found. Happy hunting.