How do I show blank cells in html formatted email sent from sql database mail?

I have the following stored procedure that sends an html email, but if there's no data in one field it throws the next column into the first empty column.  How do I correct that?
SET @tableHTML =
    N'<h1>Upcoming QA Dates</h1>'
  + N'<table border="1">'
  + N'<tr><th>Job Number</th>'
  + N'<th>FU Date</th>'
  + N'<th>PM Name</th></tr>'
  + CAST ( (  SELECT
                  td = p.JobNumber    , ''
                , td = wo.FUDate2_60   ,  ''
                , td = pm.PMName   ,  ''
                                           
              FROM (projmgmtsrv.dbo.tbl_QA AS wo
              LEFT JOIN projmgmtsrv.dbo.tbl_Jobs AS p
              ON wo.ProjectID = p.ProjectID)
              LEFT JOIN projmgmtsrv.dbo.tbl_PM AS pm ON p.PM = pm.PMID              
             
              FOR XML PATH('tr'), TYPE
           ) AS NVARCHAR(MAX)
         )
  + N'</table>';
EXEC msdb.dbo.sp_send_dbmail
@profile_name ='mssjobbook'
, @recipients='email@here.com'
, @subject = 'Message Subject'
, @body = @tableHTML
, @body_format = 'HTML';