The cache is not at the co-ordinates but is not too far away at:
N 51o 04.(alpha beta gamma); W 001o 47.(chi psi omega)
To find the missing values you need to solve the Sudoku below, which is a 16x16 puzzle with each block containing the numbers 0-9 and the letters A-F. This is an intermediate level puzzle, i.e. it can be solved without having to resort to trial and error (but it does take rather longer than a standard 9x9 Sudoku).The Greek letters may correspond to numbers or letters in the final solution; if letters convert to numbers to get the co-ordinates: A=1, B=2 etc. The cache is a micro so bring along a pen; the log should come out with the lid but if it has slipped in or not been replaced into the lid then you may need tweezers to get it out.
You can check your answers for this puzzle on GeoChecker.com.