How far down do you tighten the top nut? My torque wrench will only go down to 20ft lbs. I read until the bushing flatens to almost the size of the washer. Right now from the washer to the top of the shock is 1 1/8" The bushing isnt as wide as the washer yet but I'm not sure if I should keep going lower. They are Monroe SS shocks. Thanks. BTW I am using a shock removal tool.