My driver side window is acting weird. When I press the button the window rolls down normally for about 4 inches from the top of the door, then it slows down to a stop as if it is dragging on something then when it's past that point about halfway down it resumes normally again. It will return normally with no hesitation. The guy who did my window tint said he had a problem installing the tint because the window glass fit so snuggly in the area closest to the front of the car. It has done this since I bought the car and seems to do worse when it rains. Any suggestions? I sure don't want to replace the regulator!