I'm trying to figure out if I'm using the lock washer properly. I have the pre-81 style that uses the bent tabs. I installed it with the lock washer between the nuts. I torqued the outer nut and then bent a tab down into one of the slots on the outer nut. Is that right. Doesn't seem very efficient, but maybe it's efficient enough. I'm tempted to by a set with the new style pin type lock washer/nut combo.