Scott, that gap area (tnx 4 new pic) may be due to whatever launcher app you're using. Mine is tdLaunch, and I have it set to leave just 3 pixels above top most icon:
I get to these settings like so:
Start > Settings > Personal (default tab) > Today > Items (tab)
Once here, I tap (highlight) tdLaunch and then tap Options... button. At bottom of the next screen, there's a button labelled 'Option' which brings up the Settings screen pictured above. Your launcher may have some similar way to adjust it's top margin.
Hope this helps, MrG