so last night i tried puttin on the downey cable conversion since what i thought was the actuator that crapped out, i take it off, and notice that the shifting fork only moved about 1/4" which to me seemed odd, id expect at least 1/2", anywaz i put the assembly on, drive it, tested it, and i was not able to lock it at all, any suggestions, is it supposed to have 1/4" of play to lock the axle?