Ordered a wide replacement baffle (from sources: I should have ordered a narrow one; dryer now has three wide baffles, instead of two wide and one narrow). Using directions from the internet, removed the door, front panel and could then raise the top. It's helpful to have someone hold the top up while working. Using two screws/washers from my collection, installed the baffle. Also tightened the screws holding the remaining baffles. I replaced this baffle simply because it was missing, with no expectation of any noticeable effect; HOWEVER, sheets no longer ball up in the dryer, which was an annoying behavior without the third baffle.