Outer limit screw (front derailleur) has its limit?

[tropical]

Hi all,

I am a newbie in bicycle repair/maintenance. I tried to adjust the front derailleur on my Trek 5.9SL. It is a Dura Ace and I am not sure what the model is. After many trials and errors to correct shifting I still found the chain rubbed a bit on the derailleur at highest gears. According to this video ( http://vimeo.com/6059378) I just need to turn the outer limit screw counterclockwise, and I did. However, I still hear a little bit of scratching noise even the screw was already as high as possible. I wonder what did I do wrong? Please help.

[nameused]

First of all, nice bike you got there. Now personally I would think that it might've gotten tweaked off a little bit by hitting it on something, so I would try and tweak it back to the right to get it to stop rubbing. However there might be a smoother way to do it than that.

Maybe check the cable tension in the lowest gear? Might be too loose. Thinking as I type like I always do haha.

[cyclerUK]

Try and move the derailleur by hand to see if it will clear the chain better.
If it will, then as Nameused says, check cable tension or physical alignment.