I have run into a second problem, while I was out hunting for my pool light junction box, I looked over to find that my Dolphin stopped. I went over, turned it off, waited a few minutes, and then turned it back on. It ran for about 30 minutes and then stopped again. I pulled it out and checked to make sure there was nothing blocking the propeller and that the tracks moved freely. We purchased our house last year, according to the records from the previous owner, they purchased it in 2007. Has anyone ran into this issue?