Front Derailleur tuning.
 

My road bike has Shimano Ultegra 6600 10 speed components.
I do all the maintenance on the bike myself and still have lots to learn.
One of the things which what I am doing wrong with the front derailleur.
When the chain is in the smaller chain ring and towards the smaller gears on the cassette, after I get towards the last four I have to trim the front derailleur by shifting a little, which moves the front derailleur over but does not change chain rings. I have the opposite issue on the larger chainring and the inner cassette gears and I can get the front derailleur to move but not change gear.
I thought I had followed all the instructions and can't imagine this is by design.
I know not to use largest Chainring with largest cassette gear and vice versa.
If I don't make the Micro shift the chain rubs.

Any assistance appreciated.

Thanks
Allan

Your bike is perfectly normal, which is why FDs now mostly are made with the ability to trim. The shift cage is of a certain width, and as the angle of the cage coming to either chainring changes it'll move over within the cage, eventually till it rubs. It's an effect similar to that parallax.

To understand it better stand outside the door to any room in your home, and line up something in the room. In this thought experiment, the object is the chainring, the door the FD cage, and your line of sight is the chain. Now move over to represent moving the chain to adifferent rear sprocket, and you'll notice that your line of sight is closer to either door frame, and as you move farther it's blocked entirely (rubbing). The only way you could see that reference object from where you are now would be to move (trim) the door frame over slightly to the same side.

Great thanks for the information. I swear I don't see others doing this trimming.
I guess having a compact crank I swap front chain ring more often.
Thanks,
Allan

I don't bother trimming. Let it rub!