Joined: Jul 2007
Posts: 59
Likes: 21
Bikes: ‘09 Ibis Silk SL, ‘08 Cannondale Synapse, ‘97 Cannondale R300, '96 CKC, '91 Batt., '86 Simoncini Cromor, '85 Allez, '78 PX10, '76 Gran Jubile, '73 Arctic, '73 Interclub, '72 TdF, '71 PX10, '70 Mondia SS, ‘90 Basso Paris Roubai
Additive to everything above, I think a lot of the flex is in the plastic levers, provided the derailleurs are in good shape and properly set up. Replacing the levers alone will likely improve the entire system.