Stogey, somewhere there is a photo (on the forum) of the Crossfires door panel removed, and the plastic sheathing pulled up to show an access hole to an adjustment bolt at the bottom of the window. It looks as though you may need a special tool to fit the bolt though.
I never have much luck when ever I use the search feature, and couldn't find it. Maybe somebody will remember where it is, and post it.
Good Luck