As Hippy says, you should get a new cog if you're changing chain. I've had this happen to me before and the chain made a fucking racket. New cog and viola! Silent (ish - it's also an Izumi chain).
Though, I think the silence thing is overrated anyway.
As Hippy says, you should get a new cog if you're changing chain. I've had this happen to me before and the chain made a fucking racket. New cog and viola! Silent (ish - it's also an Izumi chain).
Though, I think the silence thing is overrated anyway.