I got a countersunk 8.25 diff cover awhile ago and just now installing it, I am using a lubelocker also. With the lube locker it says to torque in a specific patern and at 15 ft/lbs then go around again at 35ft/lbs. When I went around @ 15 it was ok, then the first hex bolt i went around at 35 it started to strip. what torque should I do the final torque at? thanks.