I can't link to the client's dev site, but here is a screenshot:
When I change padding-top from 1px to 0px for the 'BODY Box' and 'Blockquotes: Style', about 10 extra pixels are being affected. There is also seemingly nothing I can do to 'reclaim' those 10 pixels in CSS when it's set to 0px.
I've seen a lot of search results for 'atalhuapa space between post title and text' and I think this may be what they're referring to - no matter what you do in the settings there is a gap there, plus it seems impossible to give blockquotes and posts 2-9 pixels of padding. Is this a theme bug? (Edit: I'm using Chrome BTW)