custom post types, taxonomies, templates

I've created a custom post type 'job' and a custom taxonomy 'job'. I've generated the template (single-post.php) and added "job" posts but i have a problem:
the template seems like it's an exact copy of the single-post.php so i edited the template to add 'do_shortcode ('[custom_fields_block]');' but it still can't see anything else than the title and description of the post, none of the custom fields are displaying. A bit of help please?