Kenmore Dryer Loud Thud When Finished Drying

My Kenmore Elite E3 dryer started making a "thud" noise when it finished drying a load. The noise has gotten progressively louder. The noise sounds like the drum doesn’t have any "brakes" and it just crashes to a halt. It also sounds a little funny when I start it (like the drum is trying to catch up). Any ideas or suggestions? Thanks.