I put Biopace rings on anything that isn't a time capsule. At 50 miles my knees hurt with round rings. Biopace gets me up to 80 or so before the twinges start.
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You know it's going to be a good day when the stem and seatpost come right out.
(looking for a picture and not seeing it? Thank the Photobucket fiasco.PM me and I'll link it up.)