Replacing Window Felt

Did a search but didn't have much luck. Looking for some help on how to replace the window felt on my passenger side window. I've gotten some vertical scratches on my window tint because there is either dirt in the felt or it's worn out. Any how-to's on replacement and a good place to get replacement felt?

Thanks for the help
 
if your talking about the inside sweep it just unbolts from the door after you take the door panel off, i think there is 2 or 3 bolts, i would take it off and see if its just dirty... i had a penny jammed in mine that did the same thing