BAH! My ENO's loose at the moment. It's about the 6th time Just check around your drivetrain? See if the cranks wobble, the pedals wobble, the freewheels tight, the chain's ok, the BB's ok, the rear wheels ok, nothing's cracked, rusty, loose or destroyed. Just spend a few minutes checking it all out then grease and tighten it. It's not that hard