How to remove right margin space in modern cv?

Question

I am new to LaTeX and am preparing my resume using moderncv template. I changed most of the settings to suit my requirements except that I was unable to get theenter code here huge right side margin to go away.

My current LaTex souce file

\documentclass[10pt,a4paper]{moderncv}
\moderncvtheme[grey]{classic}                  
\usepackage[utf8]{inputenc}                  
\usepackage[scale=0.9, top=1cm,paperheight=11.8in]{geometry}
\setlength{\hintscolumnwidth}{1.5cm}                    

\usepackage{hyperref}                               % to use hyperlinks
\definecolor{linkcolour}{rgb}{0,0.2,0.6}            % hyperlinks setup
\hypersetup{colorlinks,breaklinks,urlcolor=linkcolour, linkcolor=linkcolour}

% personal data
\firstname{first name}
\familyname{last}
\title{MS in some univ}
\address{124 apartments}{Apt 210, some place, state, pin}    
\mobile{723 344 3344}       
\email{227@1234.edu}
\nopagenumbers{}                            
%----------------------------------------------------------------------------------
%            content
%----------------------------------------------------------------------------------
\begin{document}
\maketitle
\vspace*{-16mm}

\section{Education}
%\cventry{year--year}{Degree}{Institution}{City}{\textit{Grade}}{Description}
\cventry{Aug 2012 -}{Master of Science in Computer Science and Engineering}{University of 1231023}{1212 Uni123versity of }{\textit{3.6/4}}{Specilization Track: Artificial Intelligence\\ Relavent Courses: Machine Learning, Pattern Recognition, Algorithms.}
\cventry{Aug 2004 - Aug 2008}{Bachelor of Science in Computer Science and Engineering}{Jlfdsdfsdfsdf sdfsfdsf sfsfsfd sdfsdf}{another place, state}{\textit{3.7/4}}{}  

\section{Work Experience}
\cventry{Aug 2010 - Aug 2012}{Developer in abc infotech}{company}{place, country}{}{blas blah blah blah abc. I did this and that. I have done super great things in that company and then another and so on. blah. \\ Tools used: python other stuffetc.}

\section{ Recent Projects}
\cvline{}{\textbf{Comparison study of various models for digit recognition} Implemented Naive Bayes, Logistic Regression, Neural Networks, Support Vector Machine models to automatically classify digits and did a performance study of the models.}

\section{Skills}
\cvline{Languages}{\small Python, Java, Prolog, C.}
\cvline{Tools}{\small Matlab, Hadoop.}
\cvline{Others}{\small Linux, Latex, Git, Vim, Windows.}
\end{document}

The problem I described regarding the right side margin is as below. The address is perfectly aligned but the body is constricted all along the page and leaving huge right margin. You can see in the following cropped image

Any help to resolve this issue is much appreciated.