Sounds like good information from Kerry.
What I love about the Tin Lizzie is that the consumer can make adjustments etc. without having a service tech come out. There is so much information on the Yahoo group for Tin Lizzie and there are Tin Lizzie YouTube videos on how to service it. It does have an enclosed circuit board that you can't service, that is a company repair or replacement.
You can contact the machine company for assistance. Sometimes Greg, a tech from Wisconsin will be the one to call you to help. He is very helpful.