S13 door windows loose

[tb13]

I picked up my S13 yesterday and noticed that both the passenger side and the drivers side windows kinda flop around. I can move them in and out an inch or so and push them away from the weather stripping while in the car. Is there a slider I can replace or something to get them to stay where they should be?

[Banana_Cute]

remove the panels and tightened the bolts the holds the window to the bracket/