[Martin64]

Ah yes, the return shouldn't be doubled. These are the correct instructions:

FIND:

eval("\$retval = \"".gettemplate("postbit")."\";");

REPLACE WITH:

if ($post[datestealthbanned] < $post[dateline]) {
            if ($bbuserinfo['usergroupid']==6 || $bbuserinfo['usergroupid']==5 || $bbuserinfo['usergroupid']==7) {
                $post[message]="<normalfont><b>Stealth banned user!</b></normalfont>&nbsp;&nbsp;<smallfont><i>This post is only visible to admins, mods, stealth banned users and guests:</i><br>&nbsp;<br></smallfont>".$post[message];
                eval("\$retval = \"".gettemplate("postbit")."\";");
            } else if ($bbuserinfo['usergroupid']==16) {
                eval("\$retval = \"".gettemplate("postbit")."\";");
			} else if ($bbuserinfo['usergroupid']==1) {
                eval("\$retval = \"".gettemplate("postbit")."\";");
            } else {
                eval("\$retval = \"".gettemplate("postbit_banned")."\";");  
              }
        } else {
            eval("\$retval = \"".gettemplate("postbit")."\";");  
        }

REPLACE THE "XX" ABOVE WITH THE ID OF YOUR STEALTH BANNED USER GROUP.