Using the wizard, there's no way to get the same level on different submenus to be different lengths. You will just have to modify the width after creating the menu. It should be relatively simple since there's no submenus under those product menus. Just find the code that looks like this:
<li class="parent link">
<a href="../../Club K-9/clubk9/public_html/inductors.html" class="link">Inductors</a>
<ul class="level-2">
<li class="link">
<a href="../../Club K-9/clubk9/public_html/current.html" class="link">Current</a>
</li>
<li class="link" style="width: 100px;">
<a class="link" href="../../Club K-9/clubk9/public_html/100amps.html">100Amps</a>
</li>
</ul>
</li>
and add in the style="width: 100px;" attribute to the a tags like this:
<a href="../../Club K-9/clubk9/public_html/current.html" class="link" style="width: 100px;">Current</a>