well i bought the reverse and was looking though the manual and noticed you have to take apart the center diff. Why? there is something in the back of it saying locking the diff makes more wheelies adn harder on the drive train. Is the parts in the reverse kit for the center diff to lock it?? Also for some reason the linkage dose not come with the reverse kit... So i am going to rig up some jato linkage. The only problem i see is that there is a spring on both sides of the leaver but i dont have any extra springs. If i use the end point adjustments on my radio so the servo dose not move as far will it be ok w/o the springs??