Trying to remove the window lifter mechanism from left front door. I'm at the point where I've removed the bolt that fastens the front guide channel. Supposedly, once this bolt is removed, you should be able to move the front guide channel to create a gap, through which, the lifter (rod) mechanism can be pulled through. It's hard to see up into that area inside the door frame and I'm not certain which way I'm supposed to move that channel (I don't want to break the window!). Any advice out there!?