55.2-59 Mustang ii control arm install and torque help

[Missyblue]

Mustang ii control arm help?? So my kit didnt come with instructions ...online instructions say to torque to 55 to 85 or even 90ft lbs. And then some say 120lbs once on the ground.....I'm nowhere near 90lbs and if I keep going my nut gets past the point where the cutter key is functional.....and my rubber seals definelty are gaping and not holding grease when I dont have it tightened down.....do i use more spacers so i can still use cotter pin? And do you really tighten down that hard on the rubber seals?? ..I had been advised before to use the large spacer on the bottom and small on top...thanks for any insight