Nice! I use the same PVC tube feeder for my ASFs!

I might have to steal that idea for a modified wood top. I've had a couple rats get smart and chew their way out. I've been trying to think of modifications I can do to the plastic top... but I feel like its all just a temporary solution.

Your ASFs can't jump up to the top and then spider-rat all around the edges? Thats what mine do... they jump and then chew the edges of the lid. Grr!