I'm trying to get a roller setup for the butcher table that will serve up a fresh corpse and transport the resulting meat back to the fridge and the leather to a different stockpile. I mostly got this working. Screenshot: http://i.imgur.com/zaMzN0b.jpg

I'll explain what I'm currently doing. One of the problems I had to deal with initially was that the goods from butchering seem to just be placed haphazardly in the general area, so I couldn't make a dependable system like the stove where it's always dropped behind. So I created an empty stockpile (nothing allowed) in the butcher area, and then I have a puller pulling meat into the fridge, and a puller pulling leathers into a stockroom. This works great as long as there is a steady supply of corpses.

However, once the last available corpse is butchered, some leather or meat always ends up getting placed on the corpse stockpile, so it won't get pulled. Someone has to come haul the blockage before normal usage can resume. Is there a better solution here that is more automated?