1st page is one line higher than others

I merge one page at a time, appending them to a twpcustomrtfedit. The 1st page has one fewer blank lines at the top than all the others. I can fix this by adding a blank line at the top of the first page (below) but that makes me cringe. There's gotta be something I'm missing. Any ideas?

rtftemplate.MergeText; 
    if first then begin
      rtfmerged.AsString := rtftemplate.AsString;
      rtfMerged.CPPosition := 0;
      rtfMerged.InputString(#13);     //paragraph
    end
    else begin
      rtfMerged.CPPosition := MaxInt;
      rtfMerged.InputString(#12);     //new page
      rtfmerged.FastAppendText(rtftemplate);
    end;

By the way, I am using wpDontIgnoreSpacebeforeOnTopOfPage and wpDontAddExternalFontLeading.

Please ignore this thread. After careful study, I have a more accurate description of the problem, which I'll post in a new thread.

Jeremy