Hi. I have a Yamaha Neos 50cc scooter. I´m having a problem with it where the engine keeps losing power when I open the throttle. Quite often it then cuts out and won´t start for a few minutes. I´ve taken it into a garage for a service and they said the carb was full of water. He cleaned it all and it worked fine for the first few miles but then started again. When I took it back he said there was more water in the carb. He thinks its being sucked in through the air filter. Will changing the filter fix this? I don´t want to just keep throwing money at it if its knackered. Any advice would be greatly appreciated!