Taking the seat lock apart is pretty easy. It's actually worse getting the lock assembly off of the bike.
One part to be careful with is the sliding covers that go over the pins and springs. I've seen some made of steel, but the first one I took apart had some made of brass. It's easy to mangle the brass ones, especially if they have gunk on them that makes them not want to slide out easily.
Does anyone know what size pins are in the seat lock? Bonus points if anyone knows where to get the wafers for the ignition type lock.