71Dart Swinger/360/Dougs Headers

I put a 360 in my 71 dart this winter. Used schumacher /6 to 360 motor mounts and put Dougs d453 headers. They went in ok, but there seams to be some clearance issues with the power steering. It looks like they clear, but when the motor is running i get a lot of vibration on the steering wheel, and it looks like there are some marks in the headers. What can i do? Dont want to dent them, but i dont see any other way to make the vibration go away. Anyone have this happen?