This is the type of waterer I have, only I have the 3 1/2 gallon size. (The 1 gallon size is pictured below.) My problem is that it doesn't always drain into the drinking pan, even when the reservior is full or partially full. At first, I had it sitting on some blocks in the brooder and I just hand tilted it a few times a day to make sure it filled. I thought when I hung it, it would get gently jostled enough that the problem would resolve. NOT. It is now hanging in my coop. It sometimes fills, sometimes doesn't. Has anyone else had this problem? Any way to jury-rig it to work better? My husband tried carving a little (very little) notch to enlarge one of the drain openings, but that hasn't solved the problem. I just went in there for the second time today and the waterer was BONE DRY. Ugh. Thanks in advance!