You mean you don't just "twist'em down" until the lock washer is flat ?
That method really raises havoc with the aim however.
Get the thing peaked real nice and the lose it when doing the "final tighten"
I seem to remember when working in the dyno buildup room at Sealed Power that GM would get a little PO'd if you didn't use a torque wrench on their experimental engines.
(it was a real shame to have to take a sledge hammer to those new beauties at the end of an experimental run)