this has probably happened to everyone at least once...looking for one damn thing and get everything but. if you have one of these to bring up, go right ahead and put it here. here is mine.
As you may have noticed I had this issue with Lagiacrus horn(even though it isnt a carve and has to be obtained by reward for breaking his head) and in fact to this date still do. the cursed thing is a 64% chance of being the reward for breaking his horn after you finish the quest but to this day I have not gotten the 2nd horn I need to craft myself a mere helmet to finish my lagiacrus armor....I am actually having the same issues with plates from the raths, and dragnite ore...it just doesnt seem to be my month for materials.