aem cam gear

does anyone know the mesurements of the cam woodruff key or where to buy one for an aftermarket cam gear for the d16z6. the one that came with my new aem trutime cam gear sheared off after about 5 miles and they want me to send the cam gear back to them for inspection even tho i told them it is fine i just need a new key. frankly i dont have that amount of time to sit here and look at this car before it runs again. any help would be wonderful!!!