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P53, I think you're being a little hard on yourself (or trying to, most have compassion, it's just buried beneath thick skin). Generally I see front rowers as being very fair with young oppersition.
Most of the props I've come across (played/coached against I mean!) will wait to see if the young fella wants to be a dick, give him a reminder of where they are, then settle into keeping the scrum strong and safe. That's the best way for young props to learn how to be strong, square and well bound. The boring, popping, squeezing, nutting stuff comes later.