Originally Posted by
oldbobcat
Never heard of that. All the 105s I've set up were triples and what made them work for doubles was the outer limit screw on the front derailleur.
It's funny that the 2009 Tiagra levers are practically identical to the 105, and I never hear any complaints about them.
So that's what it is. I guess that is the cheapest way of doing it for Shimano.