WTB: Center hub for BBS wheel for '91 200Q

["James A. Desveaux" <desveaux@ucla.edu>]

Does anyone have a center hub cap--the one with the rings--that will fit the
OEM BBS wheel on a '91 200Q?  The place that mounted my Dunlops seemed to
have done everything right, down to torquing the wheels correctly, and
matching the red dot on the tire with the valve stem area of the rim, etc.
I got home and belatedly noticed a broken off piece from one of the center
caps.  It was the right rear one, so you know they knew they were dirty.
That's the wheel least noticeable to the driver.  Anyway, I'd like to hear
from one of you if there's a spare center cap lying around.  I'm skeptical
that these guys will buy me another.  

TIA

- Jim