The basic rundown is I'm installing an OBX LSD into a Y21 tranny. Comming apart and going together went smooth as I've followed every writeup as well as the FSM. The snag has been when trying to get the case together, it seems the gear change assembly rod that goes into the top half of the case, will not go in. I've tried everything from picks to lots of wiggling and it will not go in. I can see the marks on the outside of the slot in which the bar fits in, but I can't make it go in. The tranny case will snug down until there's about an 1/8th inch on the gear side, but when you snug the bolts for the case down, it binds the shift linkage and there's no side to side play in the H gate. It just goes in and out with no real side to side play. I've been fighting with this for about two full days now, and I cannot get it to work. Are there any tips, tricks, hints or things I may have over looked? Any help would be greatly appreciated, because at this point I'm at my wits end.