I'd recommend Kool Stop brake pads....and/or 5700 or 5800 brake calipers. Don't move to Ultegra...don't upgrade the BB (unless it is failing somehow).
+1 on the November Wheels (or similar).
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"The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson
'14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur