Hello. Does anyone know what the silver bolts are that spin in the seat rails when the power seat moves forwards or backwards? I accidentally took one off on the passenger side seat. It went back on easily and the power seat works fine but I was concerned I might have accidentally hurt the power seat mechanism. Since this bolt spins right and left depending if the seat is moving forward or backward I don’t think I hurt anything by tightening the bolt back on. Do I have to be concerned with it being adjusted correctly? Thanks for any help you can provide. Just a little nervous even though power seat works fine.