Just started to have a problem with my garage door the past 3 weeks. Once or twice a week when you press the button to shut the door, it comes down, touches the floor, and goes back up. Weird thing is it only does it once. When you press the button to close it again it closes fine. This only happens in the morning, too. Everything works fine otherwise. I am a beginner learning this and would like to know if someone might be able to point me in the right direction to fix this problem. Thank you!