On 21/12/2007 14:21, Peter Scandrett said,

Like POHB says - the LBS should have made sure that everything worked
before it left the shop.

It sounds like the cable may been tightened too much with the stop in
the wrong place, so that even though you've taken the stop off, the
cable is still holding the derailleur back.  It's also possible that the
new chainset has a different chainline to the old so that it will never
be possible to use your existing derailleur.  Again, your LBS should not
have let it leave the shop like that.

The work your LBS has done is not up to standard, so you need to take it
back and make them fix it.  Above all, don't bend anything and don't let
them try to take more money off you!!

--
Paul Boyd
http://www.paul-boyd.co.uk/