Post not displaying cover and not displaying on Twitter.

Hey Mark,

When you click on a post on the front page. It looks like the cover is displaying just fine on the front page of my site but when you go into the post it self the cover is no longer displaying correctly. When you go to twitter card validator it does not show the cover, and does not post the cover at all.

I think this is the reason twitter is not displaying like it should be. I want to show it off like the attachments I have posted.

I have used the verge as an example to show how I think twitter should look if it is possible.

Zack