I don't know what that diff looks like but I would suggest trying to seal the parts up with rtv. You can get it at any automotive parts store and any kind should work. If it's leaking out of the screws, put some rtv on the screw threads before you install them. Also put some on the mating surfaces of the diff case halves before you put them together. Without knowing what your diff looks like, I would think just doing this should take care of most of your leaks anyway. Hope that helps.