Quadra drive front diff, had pinion bearings done as making noise now getting a scuffing sound and vibration on turns left and right left the worse of two. Front diff started to make a meshing noise like not set up correctly and getting hot, so removed front drive shaft, diff noise gone still gets hot and scuffing noise not so bad. Changing transfer case oil when it arrives but it's Xmas and post is bad, any thoughts will be welcome, thanks