All it took was tightening the rear skewer - the wheel wasn't loose in there, but it was apparently loose enough that when I was standing the in pedals, the downstroke on the left side caused an infernal metallic creaking/ticking.
Thanks to AlanFD for tipping me that the rear dropout could be the problem:
http://www.cyclingforums.com/t395029.html
Of course, I had already swapped pedals, put on new cleats (Speedplay), pulled the cranks and greased the splines (Octalink), pulled the bottom bracket and greased it up, pulled the seat and seat post, heck, I even pulled off the water bottle brackets trying to isolate the noise.
And, while I was buying a new crank puller at the LBS, seriously thought about the Seven Elium that is $2K reduced, thinking "I bet that beauty doesn't creak".
Thanks to AlanFD for tipping me that the rear dropout could be the problem:
http://www.cyclingforums.com/t395029.html
Of course, I had already swapped pedals, put on new cleats (Speedplay), pulled the cranks and greased the splines (Octalink), pulled the bottom bracket and greased it up, pulled the seat and seat post, heck, I even pulled off the water bottle brackets trying to isolate the noise.
And, while I was buying a new crank puller at the LBS, seriously thought about the Seven Elium that is $2K reduced, thinking "I bet that beauty doesn't creak".