Hey, I've been doing all grain batches for a while, and have a nice big cooler for my mash, but I have yet to put a drain system in, I just use the built in drain on the end. This doesn't result in the best efficiency, and I'm sure I'm throwing out tons of good stuff because it doesn't drain properly. I've read up a lot on a bunch of different ways to drain it, and I'm leaning toward putting a network of slotted PVC into the bottom so I can take it apart to clean and store, but I have one nagging question I can't find the answer to. If I have a bunch of slotted PVC in the bottom, even if the slots are on the bottom of the mashtun, it seems to me that a bunch of liquid still won't be able to drain. Am I right about this? Is it alright? Is there a way to remedy it if it's not?