Checking for wear

From TrialsWiki

Wear and tear is inevitable when your riding trials. You may notice bearing wear in your pedals or your headset feels loose. In most cases a simple adjustment can sort the problem out but sometimes unfortunately it may just need replacing. Leaving worn out components on your bike usually affects other components and cause knock on damage. Signs of wear include very shiny almost mirror like surface, this generally means it has been rubbing against something.