on the confirm page, the code to set the session variable at line 16 - 22 needed to be changed:
<?php
if (!session_id()) session_start();
if($_SERVER["REQUEST_METHOD"] == "POST") {
//$_SESSION["UPS_Service"] = "".$_SESSION['UPS_Service'] ."";
$_SESSION["UPS_Service"] = "".((isset($_POST["UPS_Service"]))?$_POST["UPS_Service"]:"") ."";
}
?>
also at line 411 - 412, you where not using the session in the shipping rate look up:
//$Shipping_Parameters["CarrierCode"] = "03";
$Shipping_Parameters["CarrierCode"] = "".((isset($_SESSION["UPS_Service"]))?$_SESSION["UPS_Service"]:"") ."";