If your front end clunks when you brake or the bars feel wobbly over bumps, your headset bearings have play. Loosen the stem bolts, snug the top cap bolt just until the play disappears — then straighten the handlebars and tighten the stem bolts back up. A loose headset chews through bearings and makes steering sketchy fast. Catch it early and the fix takes two minutes. Keep riding safe!