Locate the triangular base plate and the swivel rod. Notice that there is a machined “flat” on the swivel rod. 

• Line up the “flat” such that it will be facing the tapped hole in the triangular base plate, and insert it in as far as it will go.  It should “bottom out”.   This step may require a slight and gentle “hammer tap” to seat the rod into the hole.
• Use the 3/32” allen wrench to tighten the 6-32 set screw.