I have the following table with an arrow showing the missing black horizontal black line:

Here is the relevant code, I am wondering how do I get a black horizontal line where there is one missing?
\MyNumtwo{15.24}\\
\hline
\multicolumn{14}{|>{\columncolor[gray]{.8}}c|}{\textbf{$A\times{}B\pm{}C$} Program} \\
\hline
\textbf{Number of Incidents} &
512 &
NOTE: I just realized that if you zoom in, the line is actually there. But this is still potentially be a problem if someone is reading the PDF and doesn't see the line on their computer. The line appears on the printout, but it appears to be ~1 pixel thinner than other horizontal lines.
If anyone knows a fix, please let me know.
Update: Here is my code:
\usepackage{graphicx}
\graphicspath{/./}
\usepackage{textcomp}
\usepackage{pgf}
\usepackage{xcolor,colortbl}
\usepackage{subfigure}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{array}
\begin{document}
\newcolumntype{F}{>{\centering\arraybackslash}m{1.65cm}}
\newcolumntype{L}{>{\centering\arraybackslash}m{.76cm}}
\begin{table*}[t]
\small
\caption{Bunch of stuff in a table}
\centering
\begin{tabular}{|F|L|L|L|L|L|L|L|L|L|L|L|L|L|}
\hline
%\multirow{4}{*}
%{A} & \multicolumn{9}{c|}{Stuff} \\
& \multicolumn{13}{c|}{\textbf{More junk}} \\
\cline{2-14}
\vspace{-10pt}\textbf{Junk and stuff} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\textbf{\rotatebox[origin=c]{90}{Garbage} \rotatebox[origin=c]{90}{Garbage}} &
\hline
%\textbf{Stuff here} & x & & x & x & x & x & x & x & x & x & x & x & x\\
%\textbf{More stuff here} & 0 & 5.5 & 5.5 & 5.16 & 5.5 & 1.5 & 5.5 & 5.36 & 5.5 & 5.5 & 5.84 & 1.5 & 5.5\\
\textbf{Stuff Here} & - & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.5} & \textit{.1} & \textit{.1}\\
\hline
\textbf{things} &
\textit{.5} &
\textit{.5} &
\textit{.5} &
\textit{.5} &
\textit{.2} &
\textit{.2} &
\textit{.3} &
\textit{.4} &
\textit{.5} &
\textit{.5} &
\textit{.5} &
\textit{.5} &
\textit{.5} \\
\hline
\textbf{stuff} &
- &
\textit{0} &
\textit{0} &
\textit{0} &
\textit{0} &
\textit{0} &
\textit{0} &
\textit{0} &
\textit{5} &
\textit{9} &
\textit{1} &
\textit{1} &
\textit{11} \\
\hline
\textbf{things} &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 &
1 \\
\hline
\textbf{Number} &
- &
\textit{1.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{111.111} &
\textit{9111.111} &
\textit{1111} &
\textit{111.1}\\
\hline
\multicolumn{14}{|>{\columncolor[gray]{.8}}c|}{\textbf{$A\times{}B\pm{}C$} Program} \\
\hline
\textbf{111 of 111} &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111 &
111\\
\hline
\end{tabular}
\end{table*}
\end{document}

