That screw and nut adjust the slack in the box. If you remove it, make sure it goes back the same way...count the turns on the screw or something. If its not adjusted properly it will bind.
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights