I notice that post are always 620px, In cases where the template or dynamic template is set to full-width I need the blog to follow. Any ideas on how to fix this? I still want to have the option in case I use a side bar as well.
The single pages use the single.php template which has the set width of 620px regardless of the post by default.
You can modify the CSS (most easily by utilising the individual post class added to the body tag – see the HTML source to work out which one to use) to do this, I’d suggest you use the included custom.css file to add your own modifications so they aren’t overwritten as theme updates are released.