I have a 89 runner with a 22re 5speed and duel cases. Now when I put the range box into high range it just acts like I knocked it out of gear, but if I put it back into low range it will pull like it is suppose to. Is there some kind of roll sheer pin that holds the gears to the shaft to keep them engaged when you got to low and high side or does anyone have any suggestions before I pull it apart and see whats going on with it and go to deep in pulling it apart. Thanks in advance.