My daughter surprised me and bought a pool rover jr. I used it for the first time last night. I'm having a problem with the cord twisting. As you can see by the picture, it tangles and keeps the rover from reaching clear across the pool. Anyone have any suggestions. I read that each time you use it you are to move the pin from one side of the wheel to the other to prevent it twisting. But it did this on the first run. Also, it says to keep the power box 10 feet from the pool. This doesn't leave me enough cord for it to go across the 30 foot pool. I measured the cord and it is only 38 ft. but information says it should be 41. I had to put the box right next to the edge.