Really, the correct way to "depower" a rack is to:
disassemble the whole unit
remove all cylinder seals
remove the spool valve
weld the torsional portion of the valve (to remove the "spring" feeling in the wheel)
then pack all bearings with a good grease, and grease the pinion and rack, then reassemble.
Like what I did here:
http://club-s12.org/v3/index.php?topic=29712.0
Also, steering with a real manual rack is easier, the manual rack has more turns lock-to-lock. But I find the depowered rack isn't too bad, you get used to it pretty quick.