I'm not sure from the description, but I gather you're describing chain rub on the front derailleur cage when you move to the other end of the cassette.
As the chain comes form various angles, it moves slightly in or out where it passes the cage, so if coming from the outside of the cassette it'll pass near the outer plate, and from the inner, the inner. The cage is usually not wide enough to accept all angles without moving, so it's adjusted to be right on the gears you use, at the expense of those you wouldn't normally use, such as the inner cassette positions with the outer ring.
Some FD levers have a 2nd click to fine tune (trim) the position, but many don't.
So I think your bike is OK and working normally, but since you should stop by the dealer and discuss the issue with him if you have questions.
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FB
Chain-L site
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