Thanks for the suggestion. I will give that a try. The buttons are more loose than stuck, so I was thinking the problem was from wear rather than getting gummed up. I will remove it and take a closer look. Thanks again for the reply. I will let you know if I can't get it working.
We are still using the Insinkerator classic supreme dishwasher that we bought in 1989. Over the past few months, the selector switch started to get a little balky and I would have to press and release the buttons a few times before it would start to cycle. Today it finally bit the dust and I...