Cache is not at the posted coordinates.

At the walk of bricks locate a double brick in the vee. On its own, On it, is In loving memory Paul R Armstrong. U S Navy WWII

( Use to solve for waypoint one. )  N 33 53.ABC W 117 49.DEF 

A = Add the First # of the first date and the last # of the second date.

B = Add the first and last numbers together of the first date.

C = Second number of first date.

D = Add the first and third numbers together of the second date.

E = Add the third and fourth numbers together of the first date.

F = Add the first number of the first date, and the third number of the second date together.

At this location you wiil see a " Yellow letter and 7 digits" enter the Them into the checker for the final coordinates.

You can validate your puzzle solution with certitude.