The seatbelt on the rear seat of my wagon has gone in too far and won't come out. For the last few months, whenever I folded the seat down, the seatbelt would retract in and then when I went to put the seat in the full upright position, it wouldn't let me because the button had gone into the housing. I would take out the bolt holding the end and play with the belt until it let go its death grip. This time the belt went in way too far and will not budge. I took off the plastic cover, removed the seat latching mechanism and have pulled back on the upholstery. I was hoping to find some release button but have not. Any suggestions?