Add List View webpart to Wiki home.aspx using Powershell

I am having some trouble getting a webpart on the homepage of my 2013 Team site into Edit mode. Home.aspx is a wiki page as I'm using the Publishing feature.  The webparts are there but not editable through the edit mode. Here is the code I'm using (truncated) to put a specific view on the page.

$wpm = $spweb.GetLimitedWebPartManager($pageUrl,  [System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared)

$listTemplate = [Microsoft.SharePoint.SPListTemplateType]::Tasks

$listName = "Work Tasks"

$ViewID = $list.Views["My Active Tasks"].id
$ViewURL = $list.Views["My Active Tasks"].url

$ListViewWebPart = New-Object Microsoft.SharePoint.WebPartPages.XsltListViewWebPart
$ListViewWebPart.FrameState="Normal"
$ListViewWebPart.Title = "My Active Tasks"
$ListViewWebPart.ListName = ($list.ID).ToString("B").ToUpper()
$ListViewWebPart.ViewGuid = ($ViewID).ToString("B").ToUpper()
$ListViewWebPart.Dir="Default"
$ListViewWebPart.ZoneID = "wpz"

$ListViewWebPart.PartOrder = 0
$ListViewWebPart.TitleUrl = $ViewURL
$ListViewWebPart.DetailLink = $ViewURL

$wpm.AddWebPart($ListViewWebPart, "", 0)

The webparts are making it onto the page but not in the way they would if added from the ribbon. What am I missing?

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