the other day at the track i knew something didnt feel quiet right. went over this jump and the bike started to sound like it was bogging out as if it were going to die. but didnt, it had absoultly no power at all , was making a very loud clicking from the motor sounded like the piston was constantly tapping. it had no low end or top end power. need some advice on what i need to buy to fix this problem so i can get rid of it. please someone let me know what you think.