wrap list zoom coordinates

Trying to put together a simple wraplist that zooms on the focused item.   I've pretty much got it figured out.   However, I can't seem to get the x-coordinate straight for this.   Note: I've put "0" in for lack of anything better. 

<animation reversible="false" effect="zoom" start="0,180,300,300" end="0,180,100,100" condition="Container(999).OnPrevious" time="200">UnFocus</animation>

The image always wants to jump off to the side before starting the zoom, and no amount of fiddling with the coordinates seems to move things in the proper direction.  I could not find a clear definition of the x,y zoom coordinate and their reference / origin, so I've figured it out the best I can and got 3 out of 4 right.  Any help would be appreciated.  Thanks.

Full snip for reference -

<control type="wraplist" id="999">

         <description>Music picklist</description>

         <left>30</left>

         <top>100</top>

         <width>1240</width>

         <height>500</height>

         <visible>true</visible>

         <viewtype label="3D list">list</viewtype>

         <orientation>horizontal</orientation>

         <pagecontrol>25</pagecontrol>

         <scrolltime tween="linear" easing="inout">2200</scrolltime>

         <autoscroll>false</autoscroll>

         <focusposition>2</focusposition>

         <movement>0</movement>

    <itemlayout width="115" height="110">

            <control type="image">

                    <left>0</left>

                    <top>125</top>

                    <width>100</width>

                    <height>100</height>

                    <texture background="true">$INFO[Listitem.Icon]</texture>

            </control>

    </itemlayout>

        <focusedlayout width="315" height="300">

            <control type="image">

                    <width>300</width>

                    <height>300</height>

                    <left>0</left>

                    <top>0</top>

                    <visible>false</visible>

                    <texture colordiffuse="$VAR[CustomColorFocus]" border="2">button-transparency00.png</texture>

            </control>

            <control type="image">

                    <left>0</left>

                    <top>0</top>

                    <width>300</width>

                    <height>300</height>

                    <animation reversible="false" effect="zoom" start="300,180,100,100" end="300,180,300,300" condition="Container(999).OnNext" time="200">Focus</animation>

                    <animation reversible="false" effect="zoom" start="300,180,300,300" end="105,180,100,100" condition="Container(999).OnNext" time="200">UnFocus</animation>

                    <animation reversible="false" effect="zoom" start="100,180,100,100" end="300,180,300,300" condition="Container(999).OnPrevious" time="200">Focus</animation>

                    <animation reversible="false" effect="zoom" start="0,180,300,300" end="0,180,100,100" condition="Container(999).OnPrevious" time="200">UnFocus</animation>

                    <texture background="true">$INFO[Listitem.Icon]</texture>



            </control>

            <control type="label">

                     <left>-50</left>

                     <top>310</top>

                     <width>400</width>

                     <height>52</height>

                     <font>font30</font>

                     <aligny>center</aligny>

                     <align>center</align>

                    <scroll>false</scroll>

                    <info>ListItem.Album</info>

            </control>

        </focusedlayout>

    <onclick>PlayMedia($INFO[ListItem.FolderPath],isdir)</onclick>

    <content target="music" limit="20">musicdb://recentlyplayedalbums/</content>

</control>