Joined: Jan 2009
Posts: 44,049
Likes: 6,250
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
All of the advice from [MENTION=185430]dddd[/MENTION] is good, as always, but what he left out is that they weren't very good calipers to begin with. If you do what he says, they might perform well.
Aero levers generally have more leverage than their predecessors, so that will help as well.