Nice stable there! The Camena is very, very classy.
Wow, weird on the crank. Did you contact the seller about that? I'd feel a little cranky about that (pun intended). However, if you post over on the Serotta forum that you're looking for left arm, someone just might have something. That group has an amazing collection of "stuff" stored up. Guess I shouldn't talk.
If you want to know more than you really want about my crank situation on that bike, read here:
http://www.serotta.com/forum/showthr...ghlight=cranky
I'm running a 26-40-50 Record crank and will probably be replacing it with a TA so I can run 26-36-50. I bet your custom crank will use TA rings because you can get so many sizes in so many BCDs.