pie graph ของ jpgraph มันมีปัญหา มันมีช่องว่างเพิ่มเข้ามา ต้องแก้ไขยังไง

$graph = new PieGraph(750,750);
$graph->SetShadow();

$data   = array(24.6,25.3,50.1);
$labels = array("First\n(%.1f%%)","Second\n(%.1f%%)","Third\n(%.1f%%)");					
$labels2 = array("%.1f%%","%.1f%%","%.1f%%");

$p1 = new PiePlot($data);
$p1->SetSize(0.3);

$graph->title->SetFont(FF_FONT2,FS_BOLD, 40);
$graph->title->Set('test');

/*$labels = array();
$labels2 = array();
for ($i=0;$i <= (count($data['data'])-1); $i++){
	$labels[] = $data['label'][$i]." ". $data['data'][$i] . ' ' . $this->CI->lang->line('tons') . " %.1f%%";
	$labels2[] = "%.1f%%";
}*/
					
$p1->SetLabels($labels);

$p1->SetLabelPos(1);
$p1->SetCenter(0.5, 0.4);

$p1->SetGuideLines(true,false);
$p1->SetGuideLinesAdjust(1.5);

$p1->SetLegends($labels2);

$graph->legend->SetPos(0,0.1,'right','top');
$graph->legend->SetColumns(1);

$p1->SetLabelType(PIE_VALUE_PER);
$p1->value->Show();
$p1->value->SetFont(FF_ARIAL,FS_NORMAL,8);
$p1->value->SetColor('darkgray');

$graph->Add($p1);
$graph->Stroke();