I think the last machine the guy worked on was the samsung scx 6345. It uses the same rollers for pup/feed and sep. Don't be to hard on the guy. I remember going to get a haircut and the girl was new and could see the nervousness and anxiety in her. I said to her give it your best shot and if you mess up, don't worry, it will grow back. Grant confidence in the new ones of course with some advice.
By the way, those samsung rollers will run bald and never jam. The techs hardly replaced those rollers.
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