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Now as an adviser, it drives me nuts when the students don't want to take the path I think is best. But FIRST is about experience, it shouldn't be a classroom where students sit down and watch engineers build things. Let the students make the mistakes (to an extent) and of course let them to ALL the work.
If your looking for good mentors, ask around the local college (if there is a engineering/technical minded college around your area). I know after I graduated from high school, I was eager to come back and work with the team as an mentor.
But from what I have seen, its really surprisingly stable. I have not had any issues so far.