Carl, that "race track" you describe is exactly the problem I am having with mine. The "solution" is to momentarily turn the power off and then power it back up. This reboots the unit and then it works fine. Not exactly a solution as it makes it a semi automatic cleaner, but it does correct the situation. I believe that they have a flaw in the logic they programmed into the unit. Mine is going to go back to Costco.

What is the pool buster your are talking about - is it another robot? What do you know about the Blue Pearl, I am thinking of buying one instead of the Dolphin.