Unable to set page size and trims correctly in memoir class

Question

My apologies for being a newbie with memoir. This is what I am trying to do. But it text cuts across trims, and far beyond the area it should occupy. Trims do not seem to be correct either. Would appreciate any help.

Vikas

\documentclass[11pt,a4paper,twoside,openright,showtrims]{memoir}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fixltx2e}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{float}
\usepackage{wrapfig}
\usepackage{rotating}
\usepackage[normalem]{ulem}
\usepackage{amsmath}
\usepackage{textcomp}
\usepackage{marvosym}
\usepackage{wasysym}
\usepackage{amssymb}
\usepackage{capt-of}
\usepackage{hyperref}
\tolerance=1000
\linespread{1.1}
\usepackage{float}
\usepackage{caption}
\usepackage{color,graphicx}
\trimFrame
\settrimmedsize{21cm}{13.8cm}{*}
\settypeblocksize{48.36942pt}{31.29786pt}{*}
\setlength{\trimtop}{0pt}
\setlength{\trimedge}{\stockwidth}
\addtolength{\trimedge}{-\paperwidth}
\setlrmargins{*}{3.1cm}{*}
\setulmargins{4.5\onelineskip}{*}{*}
\setheadfoot{\onelineskip}{3\onelineskip}
\setheaderspaces{\onelineskip}{*}{*}
\chapterstyle{veelo}
\pagestyle{ruled}
\checkandfixthelayout[lines]
\makeevenhead{ruled}{Book title}{}{}
\makeoddhead{ruled}{}{}{\leftmark}
\makeevenfoot{myheadings}{\thepage}{}{}
\makeoddfoot{myheadings}{}{}{\thepage}
\usepackage[dvipsnames,svgnames,table]{xcolor}

\usepackage{comment,multirow,tabulary,booktabs,threeparttable,tabularx,xcolor,lmodern,graphicx,longtable,float,wrapfig,url,underscore}
\usepackage{pdflscape}
\usepackage[backgroundcolor=gray!40,roundcorner=8pt,skipabove=10pt,skipbelow=10pt,leftmargin=10pt,rightmargin=10pt]{mdframed}
\newcounter{infobox}[chapter]
\renewcommand{\theinfobox}{\thechapter.\arabic{infobox}}
\newenvironment{infobox}[1][]{%
\refstepcounter{infobox}
\begin{mdframed}[%
frametitle={Box \theinfobox\ #1},
skipabove=\baselineskip plus 2pt minus 1pt,
skipbelow=\baselineskip plus 2pt minus 1pt,
linewidth=0.5pt,
frametitlerule=true,
repeatframetitle=true,
frametitlebackgroundcolor=gray!30
]%
}{%
\end{mdframed}
}
\usepackage{parnotes,comment,multirow,amsmath,amssymb,marvosym,wasysym}
\usepackage[T1]{fontenc}
\usepackage[normalem]{ulem}
\usepackage[citestyle=authoryear-icomp,bibstyle=authoryear,hyperref=true,maxcitenames=3,url=true,backend=biber,natbib=true]{biblatex}
\usepackage[version=3]{mhchem}
\usepackage[innermargin=1.5in,outermargin=1.25in,vmargin=1.25in]{geometry}
\usepackage[below]{placeins}
\hypersetup{colorlinks=true,citecolor=blue,linkcolor=blue,citebordercolor={0 1 0},linktocpage,pdfstartview=FitH,anchorcolor=blue,filecolor=blue,menucolor=blue,urlcolor=blue}
\addbibresource{combinedbib.bib}
\newcounter{box}[section]
\setcounter{secnumdepth}{2}
\date{}
\title{Title of the Book?}

\begin{document}

\begin{titlingpage}
  \maketitle
\end{titlingpage}

\tableofcontents

\chapter{Memoir with Trim}

\section{First section}

\lipsum

\chapter{Second Chapter}

\lipsum

\end{document}