[A4] Starter issue

[Danton J.A. Cardoso]

OK, had my starter rebuilt about four weeks ago.  Now, upon shoving in
the clutch the car will do the following:

1- Start normal
2- Not turn over but will a second try
3- Make a grinding noise, then turn over

It's a 2.8 30 valve with a five speed A4 Avant.

Is this the clutch switch going?  How easy of a fix?  Plug and play?
I have yet to get the factory manual, so visuals are a boon.

-- 
Danton J.A. Cardoso