In a message dated 11/26/05 12:22:01 AM, wes@CS.UCHICAGO.EDU writes:

<< A couple weeks ago I picked up a pair of bosch excel wipers (they were

on sale).   The left side chatters and is ineffective unless the

windshield is totally drenched.  I tried switching sides, and I had the

same problem (again on the left).  What wipers have worked well for people? >>

My windshield wiper guy, Tony DeLoni (as I've said before, you gotta love
that name), tells me that Bosch wipers are now junk and he recommends Anco which
he also sells.  I bought Trico's because Advance Auto carries refills for
them.  They seem to work better than the last Bosch pair I bought.

But, your problem might be that the wiper arms are tweaked and need an
adjustment.  One thing I've found which makes a big difference in the performance of
a wiper is the angle of attack of the wiper arm.  This can be adjusted with
two Crescent wrenches snugged up tightly on the thin part of the arm and placed
side by side right where it comes out of the bent metal base.  It takes a
delicate touch and you have to consider spring back, but a little twist can be
put into the wiper arm to adjust its angle to the plane of the windshield.
There might be something about adjusting wiper arm in the Bentley.  Worst case
scenario, buy new wiper arms.

George