200 ignition switch question

[SuffolkD at aol.com]

Looking over the Family Album I see on a print out given to me Photo 155-20
that the switch part #1 (4A0 905 849) is behind the key cylinder tumbler, 
inside a sleve which goes to the steering column #2.

Having the sysmptom of: turn the key if depressing it a bit and the pause and 
electrical whine of something before the starer engauges is the contacts of 
the switch having a gap or poor contact.  Correct?

If I reinsert the key 180 degrees over and make sure I apply no pressure into 
the dash board the key turns smoothly and starts normally.

The Avant does this when cold,  the sedan once but a new key cut (old one was 
bent) and now no such symptom.

Switch is the part I'm looking to replace in the Avant, the above part number 
the correct item?
TIA - Scott by BOSTON