Bento header top and bottom padding

Firstly bento is a great theme, I have been using it for several months. A problem is there is one page of my site where it seems no change is able to be made to the header image top and bottom padding- which is supposed to change the height of the header image.
I can change it between 5% or 10%, full height etc., the interface records the change but then on the page nothing happens. Every other page of my site the process works fine!
What could it be I don’t know how to solve, other than creating a new page and replacing it. Please might anyone know how to solve? Thanks!

The page I need help with: [log in to see the link]