My child is learning to ride his first bike and I have attached the training wheels to help him learn to balance. I have adjusted them to be slightly off the ground so he can get used to the feeling of balancing. My issue: The wheels simply won't stay in place for longer than a single ride. I notice that as my son rides and the wheels take his weight they slide up and then he risks falling on that side..
Beyond the risk of over tightening the bolts using an electric tool is there any other method of ensuring the wheels do not slip?