I've just re-built the centre diff (LSD) on my K2 for the first time and found that if I tighten the four pinion screws to the diff case quite tight but not too tight the whole diff felt stiff and lumpy when turned by hand. I backed off the screws a bit and things smoothed out. Is this normal? I'm worried now that I will now loose diff oil as the screws are not as tight as I would have liked. Has anyone else found this same situation? The card gasket is in place.