Line padding above thread controls

I'm working on my postbit here:



See that white line on top the row that contains Linkback / Thread Tools / etc? I can't for the life of me figure out how the heck to get rid of it. The class for that row is thread_controls_toolsmenu. I have the background set to the same dark color, and the toolsmenu_background stylevar looks like so:



What am I missing? The code looks like this:

<div id="thread_controls" class="thread_controls toolsmenu">

And dropping toolsmenu from the end of it kills the whole background and format. I also made the stylevar background image taller, thinking that it might get rid of the little notch at the top (like the navtabs do) but no dice there either.

Any insight would be awesome, it's drivin' me nuts!