Chain rubbing against large front plate
I have Lemond Versailles 2008 with mostly 105 components; 10 gears on the back and 2 plates on the front (39/53).
When I use the 2 outest gears(small ones) in the rear, and I use the small plate on the front, the chain rubs against the large plate. It does not rub against the derailleur, only the front plate. I took the front plate off and saw the marks left by the chain over the last year.
I didn't have this problem when I first got the bicycle or at least I did not hear it then. I have had the bicyle tuned up 3 times in the last 2 years hoping that they can fix the issue but with no luck.
Could you give me some ideas?