I'm really having some troubles here getting my lowest gear (small front/big back) and highest gear (big front/small back) to run smoothly! I've been playing with the dang barrel adjusters for about an hour and a half now, and when it's on both these two gears, the chain is rubbing against the front derailer. It is rubbing against the inside part of the cage for the lowest gear, and rubbing against the outside part of the derailer in the highest gear. Should I start loosening the limit screws? The last thing I want is to damage the bike in any way. The more detailed the info the better. Thanks for your help, and I apologize for all the posts.