On the outside of the front driver's side window, the plastic piece that helps guide and seal the window. It's about 1/4 inch wide and is directly touching the front outter edge of the window. I don't know what to really call it. I need a new one. Looks like the previous owner globbed glue over it, its all dried out, twisted inwards, and is missing in a few places. Its causing the window to be hard to go up and pop out a little. Thanks.