Rockola model 414, gripper assembly

I could use help on putting back together the gripper gear assembly.
Namely the sprocket at the very rear of the assembly.
This sprocket has 1 pin sticking out of one side of it. In what position should
I put it against the other sprocket? Pin towards? Also, the arm that goes to the turntable that should be screwed on back there, has a little bracket. How does
That go on? Thanks for the help! I almost got it!
Raven