Motorcycle Repair: drive chain, suzuki bandit, chain sprocket

Question
I have a 2002 Suzuki Bandit GSF600s.  I bought it in August of 2004 with no miles on it.  I now have 4000 miles on it and noticed that the drive chain was lose so I tightened it to the recommended 1 in, slack.  I followed the instructions in the owners manual and made sure the rear axil was aligned by the marks swing arms.  However, now when I ride I hear a rattleing or a rubbing type noise near the front sprocket.  I then took a closer look and it appeared to be where the drive chain was entering the casing for the front sprocket.  
I was wondering what that could be and how to correct the problem.

Thanks
Jeff
v_ball16mb@yahoo.com

Answer
Hi Jeff,

Take more slack from the chain to prevent slapping as it enters the cases. A small amout of slack removed should correct the problem.

Chains do not wear evenly. Check for tight spots in the chain. Always replace chain and both sprockets as a set. A worn sprocket will quickly wear a new chain, and vice versa. Keep chain well lubricated with recommended lubricants.

I'll send chain/sprocket information files to your email addy.

Respectfully,
Mark Shively