My robot was going in circles and not doing a good job at all. I called Hayward Pool Vac Repair and Woody came out and took a look at my robot and was showing me how warn it was. I did some research on prices for a new one and found out Woody was the cheapest. I went with Woody and I am happy with my choice. I had him check my chemical levels as well and he made the adjustments as needed. I would definitely recommend Hayward Pool Vac Repair for the job.