Tire pressure, tire wear, steering neck bearing adjustment..... If you were doing wheelies, you could have dented the races. Wheel bearings, torque settings on the front axle........lots of possibilities. Not something to disregard.Well..lately I've been tracking down/diagnosing a wobble in the handlebars. Pretty sure it's out of spec, and the fact it's sometime joined by a "POP" noise I'm not too happy. Other than the 1/2" of bar end wobble around 45-60MPH (light touch/no holding) and coasting, it seems fine. It's stable in the corners mostly but I have had a couple scenarios where I didn't feel too sure, and today with speed during heavy braking in front, as I applied the rear brakes it started getting loose/squirrelly until you let off rear brakes.