Alright so I do alot of ledges and stuff like that. Most of them are about 3-4 feet high. Every time I land (I land the right way both tires on the ground) the bars sometimes go foward. I always have to go home loosen the headsets bolts. Put the bars back into place. And retighten the bolts (yes I`am adjusting them all evenly). I don`t think the bars are stripped. Can someone please help me?