Get-WMIObject Output issue

Hello All,

Banging my head against the wall with this one...

As part of a script I want to output to a text file the name of a server, the name of a service and the name of the user account that is used to run the service.  Input is obviously a csv or list of servers. just like this:

MyServerName,smstsmgr,LocalSystem

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My issue is the output.  All I can get is too much information!  This is what I'm getting:

MyServerName,@{Name=smstsmgr; StartsAs=LocalSystem; DisplayName=ConfigMgr Task Sequence Agent}.name,@{Name=smstsmgr; StartsAs=LocalSystem; DisplayName=ConfigMgr Task Sequence Agent}.Displayname,.Startname
MyServerName,\\MyServerName\root\cimv2:Win32_Service.Name="smstsmgr".name,\\MyServerName\root\cimv2:Win32_Service.Name="smstsmgr".Displayname,\\MyServerName\root\cimv2:Win32_Service.Name="smstsmgr".Startname

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This is on two lines in a text file.
This is my code:

function Get-AdminService

{
    [CmdletBinding()]

    Param()

    $Servers = Get-Content -Path $InputDir\RealServers.txt

    foreach ($Server in $Servers)
    {
        $SVC = Get-WMIObject -Class Win32_Service -Computername $Server -Filter "Name = 'smstsmgr'"

        foreach ($Service in $SVC)
        {
            Write-Verbose $Service.name 
            Add-Content -Path $OutputDir\ChgService.txt "$Server,$Service.name,$Service.Displayname,$Service.Startname"
        }
    }
}
Get-AdminService -Verbose

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You can see where I'm writing verbose using just a single property and that works fine on the console. If I add multiple properties there it also doesn't work. If I wrap that part with "quotes" and just show a single property, I get a similar extended output to the file I'm generating:

VERBOSE: \\MyServerName\root\cimv2:Win32_Service.Name="smstsmgr".name

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Please can anyone point out what I'm doing wrong and how I fix it?

Many thanks