Installed Centaur Ultra torque without wavy washer
 

I recieved my new campy centaur cranks without the wavy washer? I'm not sure if it was lost going through customs or what happened... and I installed the cranks without it...

Big deal? or should I get one ordered??

Nah. They just throw them in there in case you need it.

that spring preloads your bb bearings to ensure a tight straight drive.
without, your bearings will flex under load and fail, possibly damaging you entire investment.
get the wave washer for non-drive side cup.

next question: where to order online?