I've had Maytronics Dolphin pool cleaners for the past 6 years. There design is pretty simple and I can disassemble the whole unit in about 2 minutes. Problem is THEY DON'T SELL INDIVIDUAL PARTS. When a motor or motor bearing goes out the only solution is purchase a new motor assembly for $450. My new Dolphin Advantage Ultra which I purchased in April for $850 has stopped working. They are covering the repair under warranty. A lot of good that does me - by the time I get it back pool season will be over. Is there a brand of robotic pool cleaners that sells individual parts and is easy to repair yourself without sending it to the repair center. Looking at the Polaris NEO which is similar in design to the Dolphin robots. Any advice is appreciated.