just finished putting them on. I switched from a 53/39 to the 50/34 and did not have to remove any chain. Maybe it was too short to start with, I don't know. Lowered and readjusted the front derailuer and it shifted in the stand with no problem from the get go. I can't actually ride today, time for Bday party, but took it for a spin around the neighborhood and it didn't seem to shift any better or worse than my larger rings.

More to follow,

Brian