replace your spacer_open template with this:<!-- open content container -->
<if condition="$show['old_explorer']">
<table cellpadding="0" cellspacing="0" border="0" width="$stylevar[outertablewidth]" align="center"><tr><td class="page" class="spacer-open">
<else />
<div align="center">
<div class="page" style="width:$stylevar[outerdivwidth]; text-align:$stylevar[left]">
<div class="spacer-open">
</if>and in extra css add this:.spacer-open { padding: 0 25px; }
.spacer-open .spacer-open { padding: 0; }