The Final Puzzle

After all this, there was still one more puzzle to go: The appropriately-titled "Final Puzzle." After finishing with the Bonus Puzzle, teams were given a computer disk and a "cross-number" puzzle, with some numbers filled in, depending on how many of the five ingredients they had correctly identified. The clues to the puzzle were locked in the disk, until the disk's password was given out over Z107 FM radio.

Teams who had identified more ingredients had a head start on the puzzle since some of the numbers were already filled in, but those teams with less numbers filled in were not totally out of the running. The first team to solve the puzzle and follow the disk's instructions for calling the secret Hunt phone number was declared the winner.

To win The Hunt, solve the following cross-number puzzle, then call the phone number ABC-DEFG, where:
A = the number of 9s in the puzzle minus the number of 8s in the puzzle B = the number of 9s in the puzzle minus the number of 5s in the puzzle C = the number of 4s in the puzzle minus the number of 8s in the puzzle D = the number of 6s in the puzzle minus the number of 7s in the puzzle E = the number of 8s in the puzzle minus the number of 7s in the puzzle F = the number of 8s in the puzzle plus the number of 8s in the puzzle G = the number of 4s in the puzzle minus the number of 3s in the puzzle
Across 1. A square number 4. A square number 5. A square number 8. The digits sum to 35 11. The square root of 39 across 13. A square number 14. A square number 15. Square of 36 across 17. Square of half 11 across 18. All digits are the same 19. Product of 4 across and 33 across 21. A square number 22. 5 times 5 across 23. All digits the same, except the center one 25. Square of 2 down 27. 20 down minus 17 across 28. A fourth power 29. Sum of 18 across and 31 across 31. A triangular number 33. One more than 4 times 36 across 34. Digits sum to 18, and the three middle digits are 3 36. An odd number 37. All digits even, except one, and their sum is 29 39. A fourth power 40. A cube number 41. Twice a square	Down 1. A palindromic number 2. Square root of 28 across 3. Sum of 17 across and 21 across 4. The digits sum to 19 5. The digits sum to 26 6. Sum of 14 across and 33 across 7. A cube number 9. A cube number 10. A square number 12. The digits sum to 30 14. All digits are the same 16. Sum of digits is 2 down 18. All the digits are the same except the first, which is 1 20. Sum of 17 across and 27 across 21. A multiple of 19 22. A square number 24. A square number 26. The square of 18 across 28. The fourth power of 4 across 29. Twice 15 across 30. A triangular number 32. Digits sum to 20 and end with 8 34. 6 times 21 across 35. A cube number 37. A square number 38. A cube number
The solved grid is as follows:
The number to call was 528-8181.