I had a service man diagnose the noise in my dishwasher as being caused by something in the motor and it would need to be replaced. My wife thinks a wine glass broke. My questions are a: can I attemp to disaaseble and clean the existing motor, and b: if I but a new motor can I do the uninstall/reinstall myself easily, and if so, what do I need besides a new motor? Thank you very much. Mike