[dawlthy]

You probably need to actually solve the puzzle first before you can use it as a grille tool. I.e. shuffle the logo around until it looks right.

You're probable right about that, but I suspect the cut-outs on the grille are determined by the coordinates I used to make the image above. This is how I formatted them to read easier.

/\//\\//
5,1 : 4.
1,2 : 8.
1,3 : 2.
3,3 : 2.
4,3 : 3.
7,3 : 3.
1,5 : 3.
4,5 : 9.
5,5 : 2.
7,5 : 4.
7,6 : 6.
3,7 : 3.
12 Coordinates

\\\\/\
2,1 : 2.
3,1 : 2.
6,1 : 4.
1,2 : 4.
3,2 : 2.
3,4 : 4.
5,5 : 2.
6,5 : 3.
7,5 : 3.
4,7 : 8.
5,7 : 3.
7,6 : 4.
12 Coordinates

\///\//\
1,1 : 3.
4,1 : 2.
6,1 : 9.
2,2 : 2.
6,2 : 2.
2,4 : 4.
3,5 : 2.
5,5 : 2.
7,5 : 3.
4,7 : 3.
6,7 : 2.
7,7 : 2.
12 Coordinates

\\//\\\/
4,2 : 6.
6,2 : 4.
7,3 : 3.
2,4 : 8.
3,4 : 2.
4,4 : 2.
7,4 : 3.
2,6 : 2.
4,6 : 3.
6,6 : 2.
1,7 : 4.
3,7 : 2.
12 Coordinates

It seems far to coincidental that we have four sets of coordinates and four long lines of letters. I'm thinking we need to make four different grilles using these, and then use the four lines of letters as the grid of letters underneath.

Just putting my thoughts out there incase it helps anyone else.

And yes i am posting at work

EDIT:

Dawlthy, thats amazing, have you tried applying it to the longer string of numbers?

Ha thanks, but it just happened to be the first thing that I thought of seeing those, and it happened to be right. The problem with applying it to the longer strings is that you need a few different combinations to narrow down the correct answer. There is only one combination for each string so I think we need to do something to the numbers first, and then use the method i used above on the result. Maybe.

EDIT2:
Another thought, all the numbers after the : that follows the coordinate are either 2,3,4,6,8 or 9 with the higher numbers less frequent. There is no 1,5 or 7. Not sure how this helps, but maybe they show the size/shape of the cutout in the grille.