I plan on trying this sometime in the next couple of weeks on a couple of small dents on the top tube of my 531 paramount. I will start a thread and have detailed pictures so we can see how well it works on small dents compared to a major dent. I agree that heating the tube will make it more pliable and will probably heat it up a bit before trying. If this method doesn;t work, I may try the freezing method with water in the tube. I have a walkin freezer at work and think that the method will work well as long as I don't leave it too long.