I made a feeder from a 5 gal. bucket with 1" holes drill in bottom of the sides using a large feed tub on bottom of bucket. It worked great at first then I notice feed spilled out on coop floor. This happen after I hung it up on chain to raise it up as the girls got bigger, I think they are banging it around or sitting on one side and causing spilling. What type home made feeder do you think work best