Created attachment 620 [details]
test project

Having a series using CustomAxes and a CursorTool, the tool can't be dragged because, as the customer found, TTeeCustomToolSeries.GetHorizAxis and TTeeCustomToolSeries.GetVertAxis functions don't check CustomAxes:

    Function TTeeCustomToolSeries.GetHorizAxis:TChartAxis;
    begin
      if Assigned(FSeries) then
         result:=FSeries.GetHorizAxis
      else
      with ParentChart do
      begin
        if HasActiveSeries(BottomAxis) then
           result:=BottomAxis
        else
        if HasActiveSeries(TopAxis) then
           result:=TopAxis
        else
           result:=BottomAxis;
      end;
    end;