I have told by a motorcycle mechanic that when you can pull your chain off the back of your rear sprocket and see daylight between the sprocket teeth and the chain, it is time to change your chain. Does anyone else follow this as well? When do you all normally replace your chain? I have a Primary Drive chain that I have had for less than three months and it has stretched to the point that I can pull it back about a 1/4 inch off the sprocket. This seems like very premature wear to me.