w123 upper control arm dos and donts?

[sleepstar]

gonna replace the UCAs on my 300D. looked at the DIY faq but it goes off on a tangent about brake rotors or something.

is the safest way to work around the spring to keep a jackstand under the LCA, and then jack up the knuckle when bolting to the balljoint?

am i correct in understanding that the torsion bar bolt and the ball joint can be torqued to spec with the car in the air, and that the UCA to body bolt is the one that must be torqued with the wheels on the ground?

TIA