We had this having just bought the car. Everytime the roof lowered and rose the passenger window would not shut completely. It also made a horrendous grinding squeaking noise. Like something was about to snap or break. Took it to an independent and they removed the door card. They then found the regulator had to be replaced, with some other bits and pieces. Was around 250.00, but since then, no problems. Hope you get yours sorted out.