I find in situations like this a rather large hammer used against an inanimate object is a good stress reliever. Once it's out of your system take the door card off and check the arms and the sliders on the bottom of the window. If they are good the regulator will be the next port of call.
i find hitting the mrs is just as good for stress
then who would bring the coffee out to you
i dont like coffee,
but id make her bring me out some more stella to get the job done