Quad-Wrangle Mystery Cache

For this little puzzle you just need to fill in the grid using the clues below - don't be put off by the look of it as it's not that hard. The rules are that all the numbers are all different, they are all whole and none are less than 1.

Using your completed grid replace the grid positions with their appropriate number in the co-ords below to find the position for the cache:

N51 (B3) (C1).(The sum of the two digits in the answer to C3)(A2)(C1-D3)

W002 (The second digit in the answer for B1)(The sum of the digits in the answer to A1).(The second digit in the answer to B2)(D2+D3)(The second digit in the answer for A4)

Cache is a small micro. Puzzle rating 3, cache rating 2.5

You can validate your puzzle solution with certitude.