Returning values from row and column based on 2D array

Hi, i'm new to this forum, and have problem in excel I cant solve!

So far, i find the MAX of a 2d array.

What i want to find out is the RRP (column) and the batch (row) size used to calculate that max value in the array.

So far i have tried =INDEX(Results!$B$2:$SH$2,MATCH(Calc!$B$1,Results!$B$2:$SH$502,0)) for the Column lookup.

On both row and column it returns #N/A which i cant seem to solve.

I have attached the workbook sample so if anyone can help it would be much appreciated!
Excel 2007. Although it looks to 500 row's and column's, I have had to delete them because the file is too big, so there are only 50 now.

Luke