Hey there! Lately, my bike's been making this "tak tak" sound from the chain. My mechanic reckons I need a new chain set, but he mentioned that the sprockets and chain are okay. He suspects the O-rings inside the chain might be worn out. He said I can still ride the bike, but the noise will persist. Is this normal? Should I go ahead and replace the chain set, or is there another solution worth trying?
Just to let you know, I've already replaced the chain lock, cleaned and lubricated the chain, and had it adjusted.