I noticed the pump was making more noise than normal, and called my supplier for ideas. They had me take a picture of the shaft, which was corroded because the counter-clockwise screw that holds everything in had come loose. This invalidates the warranty on my 4 month old pump. It still works, but the noise is getting worse, and I'm sure it's not long for the world. Can a motor shop repair this, or is it time to start over?