These guides are good quality but unfortunately not as tall as the originals and so still leave play against the window rails. Don even mentions this himself in the his video on the subject. I found a nice little tip to make them fit properly. Cut slithers of rigid plastic and place one under each wing of the guide before clicking it in to place. This gives them the extra height they need to bring them up to the original specs. They click in quite firmly so there is little chance of them falling out. You could even add a small amount of glue to insure they don't. The plastic does not need to be very thick. Like that of most clear packaging you find these days, or a shirt box for instance. Hope you find this useful.