Got my terrano stuck in the back garden today with the horse box on put it in 4 wheel drive was spinning front wheel as expected but was spinning the rear drivers and not edging forward. Now I thought the LSD if was spinning on one side it would put power to the other side to help it ie reduce spin on drivers side and put power to left side. Dif is def a LSD as got sticker on the dif what could be the problems and fixes thanks craig