'More tools' button partly hidden by tabs when 'back' is re-enable

[Gigibeau]

Hey, as the title states I can't live without the back button and re-enabled it. This causes the more tools button to be partly hidden like in the following picture:

Is there an easy fix for this? I messed around with the CSS file but I don't seem to grasp it.

Thanks a lot for this great theme by the way (:!

P.S. I re-enabled the back button by just deleting line 145.