Ack!! How do you keep your feeder from bridging? I'm using organic grower feed crumbles and if I don't shake the blasted thing every day the feed sticks and the chickens are hungry until I get there the next morning!! We have 8 inches of snow on the ground - it's in the 20's during the day and 0 at nite - so not a speck of humidity to blame this problem on! Seriously - is there any way around this? I've tried 2 different feeders - one with a complete open bottom and one with horizontal slots - neither work!