so i went wheeling over the weekend and when i started driving around on the rocks my power steering would squeek and the whell wouldnt turn. this happened often like when i was on an incline i would have to try to turn a couple times before the wheel would turn. and i noticed that my box has fluid leaking our the top? any ideas is it a bad box, or overheating . i think air is geting in the line but i dont know