Непоследовательная настройка маржи

Question

В настоящее время я печатаю свою диссертацию. Требования к полям текста: верхнее 2 см, правое 2 см, левое 4 см и нижнее 2 см. Мои настройки работают для всех страниц, кроме страниц, на которых находятся названия глав. Есть ли способ решить эту проблему? Я использую компилятор pdfLaTeX.

**\documentclass[12pt,a4paper]{report}

\usepackage{amsmath, amsthm, amssymb}
\usepackage{array}
\usepackage{anysize}
\usepackage{faktor} 
\usepackage{placeins}
\usepackage{float}
\usepackage{enumerate}
\usepackage{fancyhdr}%for page number font
\usepackage{lmodern}%also for page number font
\usepackage[pdftex]{graphicx}
\usepackage{caption}
\usepackage{booktabs, calc, cleveref}
\usepackage{mathptmx}%Font: Times New Roman
\usepackage{setspace}
\usepackage[font={small},labelfont=bf]{caption}
\usepackage[titles]{tocloft}
\usepackage[notquote]{hanging}
\usepackage{sectsty}.
  \chapternumberfont{\nohang\centering\large\MakeUppercase} 
  \chaptertitlefont{\nohang\centering\large\MakeUppercase}
  \sectionfont{\fontsize{12}{15}\selectfont}
\usepackage{tikz}
\usepackage[final]{pdfpages}
\usepackage[footskip=1cm]{geometry}
\geometry{
   left=40mm,
   right=20mm,
   top=20mm,
   bottom=20mm,
 }
 %%%%%%%
\renewcommand{\cftchapleader}{\cftdotfill{\cftdotsep}}
\renewcommand\cftchappresnum{CHAPTER } 
   \cftsetindents{chapter}{0em}{6em}      

\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{}
\lfoot{}
\cfoot{}
\rfoot{\thepage}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
 %%%%
\fancypagestyle{plain}{
\fancyfoot{}
\fancyfoot[R]{\fontsize{10pt}{10pt}\selectfont\thepage}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}}
\pagestyle{plain}
%%%%
\renewcommand{\contentsname}{Table of Contents}
\renewcommand{\bibname}{REFERENCES}
%%%%%

\setstretch{2}
%%%%%%%%%%%

\begin{document}
\pagenumbering{arabic} 
\setcounter{page}{1}
%Chapter 1
\chapter{\MakeUppercase{INTRODUCTION}}

\section{Background of study} 
Associating a group with a graph and finding relationships between them is 
an area of research that has generated much interest. Research on this 
subject aims at investigating relationships between groups and graphs and at 
exploring applications of one to the other.
\newpage
The main contributions of this work
\end{document}**