Back Up Lights Dont Work

im just finishing up rebuilding my a833 4 speed and when i put the back up switch in i noticed that when i shift it into reverse the reverse lever just barely contacts the ball at the end of the back up switch. isnt it supposed to actually push the ball in a bit? its like it should screw into the trans case another 1/8" at least. im getting a new switch anyway because i have the old style with riveted on prongs that tend to leak.

if you have your side cover off check to see if the arm is contacting the switch.