how do i stop my windows from making this horrifying sqeaking noise when i roll em up and down.. someone told me to put baby powder on the inside bottom strip, but i dont want to make my windows all powdery. someone else told me to put wd40 on that strip, i had to bite my lip to keep from laughing.. i thought about putting a strip of silk on the inside of that strip, but that would be really hard and i dont even know if it will work.... HOW DO I FIX THIS?? thanks!!