Any bright ideas on how to solve the clunking noise my driverside window
makes when rolled down?  It rocks back and forth about 1/4 inch.  Every time
I brake\accelerate it rocks for forward/backward with a very audible
"clunk".  The rock back clunk is louder tha the rock forward clunk.

Also everytime I hit a bump both side windows make loud clunks - they rise
up and slam down.  Both have new plastic inserts under the U-channels that
slide on the lower rail.

Other than these 3 clunks I've chased down every rattle and hum so would
very much appreciate tips on how to nail these last three noises.

Thanks,

Millo Fenzi
millo@fenzi.name