Refill Mode Problem

[Chris Gordon-Smith]

Hello All

I'm having trouble with refill mode. When I use it with the itemize
environment, the text is not correctly aligned.  I get:

--------------
\begin{itemize}
\item \textbf{Chemical Network:} A network is defined in which the
nodes are Molecule Types and connections are Interaction
Types. Molecule Types have Mass and Potential Energy, but no other
--------------

whereas with M-q but no refill-mode I get much more readable text:

--------------
\begin{itemize}
\item \textbf{Chemical Network:} A network is defined in which the
  nodes are Molecule Types and connections are Interaction
  Types. Molecule Types have Mass and Potential Energy, but no other
--------------
Any ideas?

Chris Gordon-Smith
www.simsoup.info