I'm not sure what's causing it but I have a large gap between the top bar and the actual content of the post. I believe it might be the display.template.php file how would I correct this?
Check out the code at the top between:
// Show the anchor for the top and for the first message. If the first message is new, say so.
and:
<a name="top"></a>
It looks like that code is added by a mod. If you're sure the code is correct, check out style.css and any CSS files added by the mod.