Joined: Mar 2008
Posts: 5,559
Likes: 53
From: The 'Wack, BC, Canada
Bikes: Norco (2), Miyata, Canondale, Soma, Redline
That would do it. Especially if it was right to the back and barely OK when the chain was more fresh. It sure doesn't take much wear/stretch to suddenly go from 1/2 inch to more than 1 inch of slack.