When i bought my VX the driver's window wouldn't roll down & rolling up was a nightmare.the passenger was even worse.
All i did was remove the door panels & cut a good piece of the rubbers heading down the tracks on both front & rear at both doors.
Then with a pliers i widened the tracks about 1/2 centimeter from the lower end all the way up as much as i can;Then i spray some silicone over the remaining rubber at the lower side & since then never had any issues with the windows.
Dakar was just the begining.