I bought a hanging feeder from TS this spring, and the birds did fine with it. Now that my rooster, and hens are getting bigger they don't seem to be feeding from it like they should. There is only 1 inch clearance in the pan for them to get their heads in and eat. It looks like they are having a hard time getting at their chow. I'm wondering if I should reduce the diameter of the tube, or put in a larger pan. Any suggestions?