I have a 12 year old Tiger Shark that has performed flawlessly until now. I took a lightning hit last summer that took out my power supply. I just bought a used one and it is working...power goes to the cleaner, impeller turns and pushes out water but the cleaner will only move about a foot then stops. I took it apart to be sure nothing was blocking the belt and all seems good. Out of the pool upside down it will track for a few seconds then stop. It did sit in my garage for a year and the drive belts are worn, but it was fine until the lightning took out my power supply and I parked it...any Ideas? thanks