First of all the torque is 72 lb/ft- ie `tight as buggery'.
To set the balljoint up, put as few shims in as possible while just able to move the pin around with it done up `as tight as buggery'. Pin should be a bit stiff, but must move by hand.
I find one way is screw it up finger tight, with the new lock tab in but no shims. Then measure the gap with feeler gauges, and select shims the same total thickness. You can use the edge of the shims as feeler gauges, but a micrometer makes it easy. Then put them in and tighten it up, try how the pin moves.
On the bottom ones you are supposed to take the spring out, set it up as above, then undo it and put the spring in.
Don't forget to knock the lock tab up!
Hope this helps,
