Too much spacing when Featured Image is not shown

Hi there,

Okay 1st problem: I noticed there is too much space between the Post title and the post content when I choose not to show the Featured Image on my blog posts.

2nd problem: Also, there seems to be a caching issue because when I view the post from another browser window, the featured image still appears.

3rd problem; Also, I noticed that I can't seem to "move around" the bio pic or publish date of the post, is that possible to have it removed or place it somewhere else?

Thanks!