Excuse the noob question but I couldnt find a similar question on NR. I was rinding to work today and noticed a slight tapping noise when I eased off the throttle. Pulling over and going over the bike I think it is actually the chain brushing against the guard when tension is released from accelerating. There is a bout 2.5 inches of play int he chain, but I have read that bikes with single shock absorbers need more play then dual shocks and that play will increase if no one is sitting on the bike. Does this seem like a lot? Would this require a replacement? I often ride my bike in heavy traffic. Would then continual stop/starting 'stretch' the chain some how? Cheers in advance!