There is a gap under the top bumpers that let you take the remote apart. The problem is that when the remote gets thrown or droped that gap will get bigger, the cause is that there is nothing holding that together so when that happens the gap expands and doesnt let you click the top bumper. The button starts to get lose and its hard for you to use it, when the bumper doesnt work or barley works then it makes some gameplay very hard. The fix to this problem is to ether tighten up the screws in the remote or to find a way to sqeeze the gap back to the position that its supose to be in. You can also find somthing to put inside the gap so that your top bumper is set in the right place to hit in the right spot. You can use a piece of paperor a small piece of plastic.