Shimano 105 front derailleur and 10 speed cassette question.
Let me first admit my amateur level when it comes to understanding bicycle mechanics. If I happen to say something stupid please forgive me.
I have a Cannondale R800 double with a 10 speed cassette with, Ultegra rear derailleur, and a 105 front derailleur.
No matter how much I adjust the front derailleur the chain always scrapes along the front derailleur either on the first gear or the tenth gear of the rear cassette. If I compensate for the first gear it scrapes on the tenth gear and vice versa.
When I did dome searching on the Shimano website I only see the 105 components working with a 9 speed cassette. My question is was the 105 front derailleur designed to work with a 10 speed cassette?
I should mention that the bike has all of the stock components, so I didn't think that non-compatible components would be installed, but I just can't seem to get it right.
Thanks for your help in advance.