Hi Luis,
The left menu as described in my
guide uses a centralised story river.
As stated there it assumes a wide screen monitor, so left menu, story river and sidebar can be seen together.
If you do not want a centralised story river (as is your case), you have to shift the story river to the right AND you have to shift the sidebar to the right as well. Add something like the following to your stylesheet:
.tc-sidebar-scrollable {
left: 1000px;
}
Adjust the left value to your needs.
Hope this helps.
Cheers,
Ton