It's a shame that Ural doesn't have dif lockers I miss them, When I had to tow a wheel loader and a 4x4 tractor from the swamp I had the wheels spining than added some 3 tons to the typper and they went, but a locker would be a big add. Im working on one with a brazilian company that calls Kaiser they do a smart one that feels one will spining and lock the other lets see if its a dream or if works