control arm tightening (at ride height) ?

[RSpilla]

Can anyone confirm if the wishbone front bush (single bolt) is to be tightened without load or whilst vehicle is sitting at ride height? Im under the impression my previous bush has failed drastically and loosened itself in the casing because it was not tightened at ride height, i have just fitted a new wishbone and dont have access to a haynes manual for this vehicle. Many thanks.

[mjt]

If what you're calling the wishbone is what Haynes refers to as the control arm then it should be tightened with the weight of the car on it.