[TR] Upper Control Arm bushing torque

[Brian.L.Jones at gsk.com]

I am doing some work on my front suspension, replacing springs and shocks 
ahead of the PA Reliability run next week (www.abrr.org). The right front 
suspension on my TR4 was very tight (jacking under spring pan lifted the 
car, rather than compress the spring). The tightness was at the upper 
control arm bushings - they were very tight. I understand the assembly 
procedure is to let the car down on its wheels before fully tightening the 
slotted nuts to compress the bushings. What torque must I then tighten the 
nuts to? Is it a tighten, then back-off-a-flat process?

Thank you,

Brian
1963 TR4