My the reverse on my car stopped working about 6 months ago. I'm attempting to screw in the adjustment screw on my 79 300d as shown in the post above. It seems really tight(in both directions though), and I can't turn it with the notch I cut. Does this mean that the adjustment is not loose and something else is broken or the adjustment bolt is just seized. Any advice would be appreciated - hope I don't need a new transmission.