Controlling The Massive Spacing Between TH Elements - html

Question

I've checked about 50 links in the past 20 minutes and tried every combination of stuff I can think of but there is still this massive automatic gap between my th elements, as seen in the picture below.
The test column will eventually be removed so that item has a colspan of 2, but in the mean time I cannot figure out how to remove this gap.
As you can see, item and test are very close, which is what I want. The rest are miles apart, and it's getting extremely annoying that I cannot solve this.
Picture: http://i.imgur.com/Herr27e.png
Markup & CSS:
Both generated from HAML and SCSS respectively.
<div class="ticker">
<h2>NEW LISTINGS</h2>
<div class="ticker-body">
<table id="new-listings">
<thead>
<tr>
<th>Item</th>
<th>test</th>
<th>Seller</th>
<th>Seller Wants</th>
</tr>
</thead>
<tbody>
<tr>
<td class="item-image">
<div class="item-image-container">
</div>
</td>
<td>Item Name</td>
<td>tsujp</td>
<td>Something Else Here</td>
</tr>
<tr>
<td class="item-image">
<div class="item-image-container">
</div>
</td>
<td>Item Name</td>
<td>tsujpdsds</td>
<td>Something Else Here</td>
</tr>
</tbody>
</table>
</div>
</div>
.ticker
{
.ticker-body
{
margin-top: 10px;
border: 1px solid $type25Border;
#include transition( border 0.2s ease-in-out );
&:hover
{
border: 1px solid $greenText;
}
}
}
table#new-listings
{
width: 645px;
color: $whiteText;
thead
{
font-family: "opensans-SB";
font-size: 14px;
th
{
padding-top: 15px;
padding-bottom: 8px;
}
}
th, td
{
text-align: left;
vertical-align: middle;
padding: 5px 10px 5px 10px;
}
tbody
{
tr
{
font-family: "opensans-R";
font-size: 12px;
//border-top: 1px solid $type35Border;
&:nth-child(odd) { background-color: $type60Background; }
&:nth-child(even) { background-color: $type70Background; }
.item-image
{
width: 45px;
height: 32px;
.item-image-container
{
width: 100%;
height: 100%;
background-size: contain;
background-repeat: no-repeat;
background-position: center;
background-image: url( "src/hornmask.png" );
border: 1px solid $type35Border;
box-shadow: $softShadow;
}
}
}
}
}