Ok definitely looking at detail here so feel free to ignore me. Take both of your hands and place each one of them vertical with the metal window border of the door. Basically left and right side of window frame. Now lean into the door moving your weight and push back, repeat. There's a loud squeashy sound (yes that's a technical term). I tried this on my little mazda and random cars in the parking lot (honda, toyota, etc.) and they are more solid. There's definitely not much room play opposed to the Alfa. I found this in all four doors.