I need to replace the lower balljoints on my 124.

Do I need to compress/remove the spring, or can I just support the lower control arm with a jackstand?

Is there a special tool needed to press out and replace the ball joint? I'm a believer in buying the tool if it would cost me as much or more to have someone else do it. If so, any sources?

Does the control arm typically have to be removed to do this?

I've noticed that there are no zerk fittings on the ball joints. Is it feasable to install them? Would they tend to last longer with regular lubing?

Thanks,

Gary