Banner sidebox heading not changing

Using v1.3.9h.

I'm trying to change the headings of my sideboxes. The one that says Sponsors needs to be changed to Affiliates, and vice versa. I went into my custom english.php file and changed them, and uploaded it to my site, however it's not changing. This is the code I have:

// banner_box
  define('BOX_HEADING_BANNER_BOX','Affiliates');
  define('TEXT_BANNER_BOX','Visit our Affiliates');

// banner box 2
  define('BOX_HEADING_BANNER_BOX2','Have you seen ...');
  define('TEXT_BANNER_BOX2','Check this out today!');

// banner_box - all
  define('BOX_HEADING_BANNER_BOX_ALL','Sponsors');
  define('TEXT_BANNER_BOX_ALL','Please visit our Sponsors');

I have cleared my cache, and emptied my admin logs to see if that's why it wasn't updating. I've also searched tutorials, and tried those, but it's still not updating.

Site link: shoplittlemissk.com/store

The Expressions Vinyl is an affiliate, and the It Works and Shaklee are sponsors.

Also, I have Banner_Box2 off.

I seriously cannot figure this out. I'm saving it here:
/includes/languages/english/custom/english.php

Is that not the right spot? Should my languages folder have a custom folder, then an english folder?

Nevermind, I figured it out.

I created a custom folder in the languages folder, and copied it there. It's now updated.

/includes/languages/custom/english.php