Originally Posted by leonardpiz1

I just did this yesterday, you need a T-40 Torx bit, it has the be the screwdriver style bit and it slips into a 1/4 inch drive adapter that usually comes with the set. You also need a long 1/4 inch extention to connect to it. Once you snap all of that together, its nothing to it, its very simple and easy with the tools that I mentioned. NOTE: A 3/8 drive extention wont slip between the opening on the plenum.