NVM, Got it sorted thanks to some AI.  Here is the script as I am using it now:
Select Top 1000000 tsysOS.Image As icon,
  tblAssets.AssetID,
  tblAssets.AssetName,
  tblAssets.Username,
  Convert(datetime,SubString(SubQuery1.Value, 1, 😎 + ' ' +
  SubString(SubQuery1.Value, 9, 2) + ':' + SubString(SubQuery1.Value, 11, 2) +
  ':' + SubString(SubQuery1.Value, 13, 2)) As [Last Rebuild/Deployment],
  tblAssets.IPAddress,
  tblAssets.Lastseen,
  tblAssets.Lasttried,
  TsysLastscan.Lasttime As LastRegistryScan,
  Case
    When SubQuery1.Valuename Is Not Null And SubQuery1.Valuename <> ''
    Then 'Yes'
    Else 'No'
  End As ValuenameFound,
  SubQuery1.Lastchanged
From tblAssets
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
  Inner Join tsysOS On tsysOS.OScode = tblAssets.OScode
  Inner Join TsysLastscan On tblAssets.AssetID = TsysLastscan.AssetID
  Inner Join TsysWaittime On TsysWaittime.CFGCode = TsysLastscan.CFGcode
  Left Join (Select Top 1000000 tblRegistry.AssetID,
      tblRegistry.Regkey,
      tblRegistry.Valuename,
      tblRegistry.Value,
      tblRegistry.Lastchanged
    From tblRegistry
    Where tblRegistry.Regkey Like '%SOFTWARE\Microsoft\Deployment 4' And
      tblRegistry.Valuename = 'Deployment Timestamp') SubQuery1 On
      SubQuery1.AssetID = tblAssets.AssetID
Where tblAssetCustom.State = 1 And TsysWaittime.CFGname = 'registry'
Order By tblAssets.Domain,
  tblAssets.AssetName
 
The end result looks like this:
