This is my first post. I have a Dolphin Cayman (same as Active 20 or S200) and it has around 18 months of use. When I try to start it, it will move forward for about 2 feet, move backwards for about 1 foot and then it will stop completely. When I remove it from the pool and run it upside down, I can hear some clicking coming from the brushes. Anyone ever experienced the same behavior and can perhaps shine some light on the problem here?