Improved Arrows

Where do you get the improved arrows for Bow/Xbow (Diamond Arrow) Since the Raven Ninja clan questline is bugged, you can't buy Diamond Arrows from Mo, how do I go about acquiring them?

 

Killa bees, fire tusks and electrophants drop them.

Check www.bbb.hidden-street.net for drop lists.

 

Ya I checked there but couldn't get a single one to drop....

 

I can confirm they do drop there but I found only 1 drop of 40-something arrows during the entire Subani's Legacy quest.