This may not be too relevant, but when I was trying to farm bomb ashes off some Level 23~26 enemies, they scarcely dropped anything when using a 50 Marauder. No shards, crystals, and maybe three ash after making two passes.

Switched to 32 Gladiator and they dropped shards, bomb ashes, bomb arms, and other stuff.

Thinking about sheep, so it worries me too.