Hi, I'm hoping somebody knows about stunt scooters. My DS has just bought one and followed the sizing guide online. He is 171cm tall and it said online he should order 79cm+ scooter. Its arrived and it looks really small on him. I've tried to look up images of people on stunt scooters and I can't find anything. Hes worried he will be laughed out of the skate park. What do you think?