I will try what you suggest. It's not that they DO know it all, they THINK they do and often blurt out answers to try to impress the others. Our students seem to be different then they used to be. I've taken other classes through CEE for younger students to try to achieve some understanding of them. These are a mixture of young and old. A classroom may have students that are 19 to 30 years old with some 40 some things tossed in. We have students that have always been interested in working on cars and students that just decided 3 months ago they wanted to try this. Not to mention the 40 some things looking for a career change.