The collection pcs (e.g. Broken Axe of Burning Fury) say they can be obtained by using Insane BoneCrusher Spheres (orange). Is this a typo... I'm inclined to think it's not since I've used 200-300 red spheres without getting a single collection piece. But I had to use Insane BC sphere to get the pieces needed to complete the Insane Bonecrusher collection....

Someone please clarify...