The hexagon shaped rod fits inside the the ATX input shaft. This rod fits into your torque converter. When you install the torque converter onto the atx, spin it around and work it down until you here a slight grinding noise. This is the spline on the input housing hiting the inside of the torque converter. This is how you know you have the torque converter down all the way on the the atx. When you abut the atx to engine, you should have to slide the torque converter forward to the engine to bolt it down. This provides enough clearance when you do this.
Make sure you have the hexagon rod in all the way. You should see wear marks from how far it was in previously.
Bob
