When my GT200 was supplied, I noticed an occasional slight clonk from the front end under sharp braking. The fault was in the bearing at the top of the steering head. This brg has a retaining nut that has to be tightened to a light pinch setting on assembly at the dealership, and my dealer had done a slightly too light pinch! The front mudguard had also come a bit loose, so my dealer had some re-work to do with my machine.