# Move vertical list of sections-subsections down

I'd like to move the vertical "index" of section and subsection that appears in themes like "Goettingen" down. I tried to add a vertical skip with addtobeamertemplate, but that moves all the sidebar content down, while what I want is to move just the "index", not Author/Title, so to gain free vertical space between "author" and "section 1". I'm attaching some example code:

\documentclass{beamer}
\usetheme{Goettingen}

\title[Title]{title}
\author[Author]{author}

\begin{document}
\section{Section 1}
\subsection{1}
\frame{1}
\subsection{2}
\frame{2}
\subsection{3}
\frame{3}
\subsection{4}
\frame{4}
\subsection{5}
\frame{5}
\subsection{6}
\frame{6}
\end{document}

-

Remove your \addtobeamertemplate and add
\usepackage{etoolbox}

This searches for the definition of \insertverticalnavigation into beamer sources and adds a a vertical skip just before the vertical navigator is printed by the \dohead command.