hi every1 im a newbie to this great looking site. i have an a3 1.8t 99 v plate. drivers window always been dodgy will go up when push the button then back down on its own, you have to push it up as you have the button pressed in order for it to go all the way up otherwise it just goes back down? today passenger side has started similar but goes up fine then couple of seconds later goes down about 6 inches and stays there until you push it up. think its possibly the regulators or could it be the motor?