So i have made negative progress today... After going out this morning and buying a $16 13/32" cobalt drill bit i found it wasnt going to drill out the imput flange to my lsd. So after pulling the diff back out to fenagle it up with a drill press im just going to swap the flanges.

I know the importance of correctly pre-loading the imput bearing on the differential has been discussed before, but i cant find any specifics of how to actually do it.

Do i simply notch the nut and input shaft on the LSD similar to removing a steering wheel? It seems that im just missing a torque somewhere here thought.

Can any axle grease be used to fill the flange before connecting the drive shaft back up?