I just found out that I can not thread plastic wrapped pipe with my 12R die head. I have a 700 power drive with a complete set of dies and I was very happy with them. I use them all the time, but just recently I needed to thread some pipe for a gas line and discovered the 12R die head would not fit over the plastic wrap. I do not want to buy a threading machine because of the size and weight. I need to be portable. Is there a 12R die head for plastic wrap pipe?