I know what the documentation said. What I'm saying is that it did not work so I did then try running the upgrade script. I uploaded all the new files but that did not correct the issue. I then tried running upgrade.php as I thought that just uploading the new files would do nothing to change any database values. I don't see how it could.
Anyway, the problem is still the same and uploading the new files also reverted the templates newproduct and editproduct back to a value of 5 for the zipcode fields. I changed them back to a value of 10 so they now work again if you are placing an ad.
The problem still remains though that if you are VIEWING the ads, you can't enter more than a 5 character zipcode to see how far the products are your your location.