I know everyone and his brother is using silicone to seal diff covers these days but my success has been spotty. I'm going to change my gear lube front and back this weekend and plan on doing it the old fashioned way with cardboard gaskets. As far as I remember I shouldn't need any cement other than perhaps to tack the gasket to the cover for ease of reassembly. Just torque it to 30 lbs. and I'm done,... correct? Thanks in advance.