Still doesn’t work 
this is driving me mad I have been trying it all day and when you re posted I thought woooohooooo , but sadly no
This is my code –
<?php
/**
* Template Name: Full Width, no sidebar(s)
*/
get_header(); ?>
<div id="main-fullwidth">
<?php
if (have_posts()) : while (have_posts()) : the_post();
/**
* Find the post formatting for the pages in the post-page.php file
*/
get_template_part('post', 'page');
if(comments_open( get_the_ID() )) {
comments_template('', true);
}
endwhile;
else :
get_template_part('post', 'noresults');
endif;
?>
</div><!-- #main-fullwidth -->
<?php get_sidebar(); ?>
<?php get_footer(); ?>