Featured Image keeps cropping

add_action( 'wp_enqueue_scripts', 'brian_scripts' );
if ( function_exists( 'add_theme_support' ) ) {
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 214, 9999, false );
add_image_size('large', 500, 9999, true); //custom size
}

This code is in your functions.php?

The docs for add_theme_support() suggest to only use it in the functions.php of the theme or attach it to the after_setup_theme hook.

Also you’ll need to trigger the resizing of the images every time you change something to your code.