I am in the midst of replacing the lock cylinder and switch on an 89
Saab 900 SPG Turbo.  I have the new lock cylinder and switch installed
and have re-wired the switch and reverse sensor.  When I go to test
the ignition, the key won't turn all the way and give the springing
action at the end of the turn.  It stops at like 3/4 of the way.  I
did not replace the gears as they looked satisfactory.  I mention this
b/c, I believe, the gears are not misaligned.  The lock cylinder and
switch both have notches on em that will only allow for them to be
installed one way.  Well, the switch can be put in so that the key
will not turn at all.  Is there any trick to putting in the switch so
that it is alligned to spring at the end?

I would appreciate any help.