wot?
the steering wheel should be centred when the rack is centred.. the tie rod ends adjust the wheels position from there. assuming it was in the middle before, leave steering wheel alone.
as for tie rod ends.. get a bit of wood a bit longer than the cars width, put a nail through one end, and attach coathanger to the other end.
put wood in front of wheels and line up nail with inner or outer of a certain groove, then bend wire to match on other side.
then, without accidentally bending the wire, put the wood behind the wheels and see how far out the same groove is on the back.
to begin with, adjust tierods so the wheels are parallel, ie same width between grooves front and back.
then go for short roll and see if car veers to one side or other... then adjust tierods equally to straighten it up.
this should at least give you roughly zero toe in, and roughly straight ahead driving, in order to get to alignment place
edit: you could use strong on outsides of wheels, to get a rough idea of straight before doing the above..
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