Table margin, white space problem and position problem

Question

Table margin problem, extra space is appear in the margin of table (see landscape table 3), also table position is wrongly appearing(I have place the second table in last but it appears as second also white space is appearing). For removing the white space i have use the this link

Please see the below code

\documentclass[5p,times]{elsarticle}

\usepackage{lipsum}
\usepackage{tabulary,longtable,afterpage}
\usepackage{booktabs}

\usepackage{longtable}

\setlength\LTcapwidth{1.5\linewidth}

\makeatletter
\AtBeginDocument{\@ifpackageloaded{rotating}{\PassOptionsToPackage{figuresright}{rotating}}{\usepackage[figuresright]{rotating}}\setlength{\rotFPtop}{0pt plus 1fil}\setlength{\rotFPbot}{0pt plus 1fil}}
\makeatother
\makeatletter
 \AtBeginDocument{%
  \@ifpackagewith{endfloat}{figuresonly}
  {\DeclareDelayedFloatFlavor{sidewaysfigure}{figure}}%true
  {\@ifpackagewith{endfloat}{tablesonly}{\DeclareDelayedFloatFlavor{sidewaystable}{table}}%true
  {\@ifpackageloaded{endfloat}{\DeclareDelayedFloatFlavor{sidewaysfigure}{figure}\DeclareDelayedFloatFlavor{sidewaystable}{table}}{}}%false
  }%false
  }
\makeatother

\usepackage{pdflscape}
\makeatletter
\newcommand{\aftertwo}[1]{\afterpage{\if@firstcolumn #1
  \else\afterpage{#1}\fi}}
\makeatother

\begin{document}

\begin{frontmatter}

\title{Title}
\author{So Nia}
\address{Department, University}
\ead{[email protected]}

\begin{abstract}
\lipsum*[2]
\end{abstract}

\end{frontmatter}

\section{Start}

\lipsum[1-20]
\aftertwo{
\onecolumn
\begin{landscape}
\begingroup
%\makeatletter\if@twocolumn\gdef\TwoColDocument{true}\onecolumn\onecolumn\fi\makeatother 
\begin{longtable}{llll}
\caption{{margin problem } }
\label{table-wrap-fba274e78034f116895e336231c44998}
\def\arraystretch{1}\\\endfirsthead \hline \noalign{\vskip3pt} \noalign{\textit{Table \thetable\ continued}} \noalign{\vskip3pt} \hline \endhead \hline \noalign{\vskip3pt} \noalign{\textit{\hfill Continued on next page}} \noalign{\vskip3pt} \endfoot \endlastfoot 
\hline 
 &  &  & \\
\hline 
Top major diameter &
   &
   &
  \\
Colour \$  &
  Odour \$  &
  Shape\$  &
  Size\\
Top major diameter &
   &
   &
  \\
 &
  Top major diameter &
   &
  \\
 &
  Top major diameter &
   &
  \\
Top major diameter &
   &
   &
  \\
Top major diameter &
   &
   &
  \\
 &
  Top major diameter &
   &
  \\
Standard (Yellow) &
  Standard - Odour present &
  Standard - funnel shaped &
  Standard\\
 &
   &
  Top major diameter &
  \\
Top major diameter &
   &
   &
  \\
Top major diameter &
   &
   &
  \\
``BLU''\mbox{}\protect\newline Complement (Blue) &
  ``NIL''\mbox{}\protect\newline Odours absent \$  &
  ``CUP''\mbox{}\protect\newline Shallow funnel (0.5x) &
  ``LRG''\mbox{}\protect\newline Large (2x)\\
Top major diameter &
   &
   &
  \\
 &
   &
  Top major diameter &
  \\
 &
  Top major diameter &
   &
  \\
 &
   &
  Top major diameter &
  \\
Top major diameter &
   &
   &
  \\
 &
  Top major diameter &
   &
  \\
``BLK''\mbox{}\protect\newline Black &
  - &
  ``FLT''\mbox{}\protect\newline Flat - no funnel &
  ``SML''\mbox{}\protect\newline Small (0.5x)\\
Top major diameter &
   &
   &
  \\
\hline 
\end{longtable}
\endgroup
%\makeatletter\@ifundefined{TwoColDocument}{}{\twocolumn}\makeatother 
\end{landscape}
\twocolumn}
\lipsum[1-3]


\begin{sidewaystable*}
\caption{{Model dimensions (n=5)\protect\footnote{}} }
\label{table-wrap-dbcdcefc391c9632252d0f4af2b7564c}
\def\arraystretch{1}\ignorespaces
\centering 
\begin{tabulary}{\linewidth}{LLLL}
\hline 
 &  &  & \\
\hline 
Dimension &
  Value (mm) &
  Dimension &
  Value (mm)\\
Top major diameter &
   &
   &
  \\
Funnel depth &
  32 &
  Stem &
  2.2\ensuremath{\times}2.2\ensuremath{\times}30\\
Top major diameter &
   &
   &
  \\
Top major diameter &
  16 &
  Joint (cuboid) &
  20\ensuremath{\times}13\ensuremath{\times}15\\
Top major diameter &
   &
   &
  \\
Top major diameter &
  Top major diameter &
   &
  \\
Top minor diameter &
  12 &
  Joint hole diameter &
  2.5\\
Top major diameter &
   &
   &
  \\
Top major diameter &
   &
   &
  \\
Bottom major diameter &
  8 &
  Groove width &
  5\\
 &
   &
   &
  \\
Bottom minor diameter &
  6 &
  Flower head &
  37\ensuremath{\times}35\\
\hline 
\end{tabulary}\par 
\end{sidewaystable*}



\lipsum[1-3]
\begin{table}[!htbp]
\caption{{The table caption.} }
\label{table-wrap-080b5a6bf98cbec2ade1869d93533ff4}
\def\arraystretch{1}\ignorespaces
\centering 
\begin{tabulary}{\linewidth}{LLLL}
\hline 
 &  &  & \\
\hline 
thead1 &
  thead2 &
  thead3 &
  thead4\\
jjjj &
  dss &
   &
  \\
 &
   &
   &
  \\
\hline 
\end{tabulary}\par 
\end{table}
\lipsum[1-3]


\end{document}