I've had the Zodiac Baracuda G3 ever since I moved into this house about 2 years ago and it's been pretty effective at its job for what it is. For some reason a month or two ago, it suddenly always seems to get stuck on the stairs. This never happened before and I'm not sure how to prevent it. The deflector wheel happens to be at exactly the same height that it takes to get stuck on the stair... See attached for a picture. Has anyone dealt with this before? I can't get my mind around how to fix it or what would even suddenly cause this.