UPDATE:
I replaced the Deda Zero Nero carbon stem with a Deda Zero2 stem.
Interestingly enough, the aluminum Zero2 is slightly lighter than the carbon stem.
BTW, thanks to eagled eyed @
rm -rf for noticing the second crack. There was an annoying creak that I couldn’t identify. After replacing the old stem, the creak is gone. I hate to think what would happen if the stem broke off during a descent.
I also bought a Zero2 to replace the Zero Nero in the C59. Better safe than sorry.
