i am trying to replace the felt gaskets around both my front windowsinside the door where the door frame and window glass meet. also the rear roll down window has the same gasket at the top of the tailgate, and it to needs to be replaced. all three power windows have issues. the driver window moves at the normal spped, but after going half way up it just stops, and a minute later you can roll it the rest of the way up, or you can pull up on it will pushing the switch and it will go all the way, but this does not happen all the time. and the passenger window is just sooooo sloooow, up or down, do i need to replace motors, or could something else be the cause. i took the panel off the tailgate, and cleaned and greased the tracks, and it seems to move up a little faster now, but now i have this nasty grease streak down the middle of the glass every time i roll down the window, because i got some of the grease in the gasket. sometimes i think i should just by a new truck, until i drive one, and then drive mine. a friend told me i should add lift to the truck to prevent bottoming out, i said "on what, a crown victoria?"