- Acme Themes

Hello afcrafton,
If you want to change the height and width of the header image recommended size, you can find the codes on acmethemes\core\custom-header.php in custom-header and change the recommended size as your need.
As per the message, the size mentioned on the theme is suitable for the theme design.
If you mean to say anything different, please let us know.

Warm Regards
Acme Supports