ok, iv just bought one. had it about a week, iv noticed that the chain tension varys dramaticly with it. It goes from a good tight chain to a super loose one............ as far as i was aware, the tension was fine when i had my tensile freewheel. so what i want to know is has anyone else had this trouble with monty freewheels. if its not the freewheel then i guess its my bb. cheers. x