hey ya'll with them avm hubs, it says that the axle-shafts shouldn't move with the wheels, but if i engaged the 4wheel drive, does that mean i'd just be shooting blanks? i deal with a lot of spotty black ice in the winter and the quick engaging 4x4 saved my a$$ a few times, i would lose that saving grace if i changed the hubs wouldn't i? i DEAL with the automatic hubs sometimes sticking on, and all that fun stuff so options would be nice. would i be better off replaceing the autohubs or switching over?