Are you talking about the 11mm hydraullic-fitting ? Spray it down with KROIL/PB Blaster, or sometype of penetrating oil.

You don't need to drop the half-axles.

What you need to do is lightly compress the appropriate control arm to gain access, since when jacked-up, the control arms are hanging-down.

A floor jack w/jack-pad placed under the control arm at the strut mount works for me.

:-) neil

PS: relieve the pressure of the hydraullic system, otherwise oil will spray EVERYWHERE.