The screws are coming loose out of the tire axle. What do I do?

The screws are coming loose out of the tire axle. What do I do?

We have noticed this problem on our more recentl models and we are currently making improvements to fix it. One solution is applying a lock-tight liquid onto the screw threads and re-inserting the screw into the tire axle. If you continue to have problems, please contact us.