Did not use the Ultra Black RTV sealant, but would suggest you follow the directions as stated on the sealant. Makes sense to allow the RTV to "set-up" a little by waiting an hour before tightening to proper torque value. This would reduce the likelihood of extruding the sealant from various locations & preventing a strong & effective gasket from forming. I essentially followed this procedure when I performed my repair back in 2010.