while Im not the creator of this template - I think I can still offer advise. ( hope Jet doesnt mind me butting in ! )
I think you will find the answer in the CSS - padding to the left 15px
Just as a side note , are you sure you want a banner image 1200px wide ?
#logo (line 162)
what happens for the people who dont have 1280+ screens ? there are still quite a few that dont ! also the whole template is fluid so grows and shrinks to a certain degree , unless you have changed the CSS to a fixed size .
its only my opinion after all , but I would think about maybe using two images that look like one , that have the sliding doors effect to some degree , or a repeatable image behind the logo. and overlay text.
Hope that points you in the right direction.