If you buy this adapter and have a problem with food getting stuck or the adapter falling out, YOU DID NOT INSERT IT CORRECTLY. You must use more force when inserting the adapter into the feeder, or else it will only go in partially and the angle will be too shallow. I have been using this exact same adapter for 6 months and I assure you that food does not get stuck when inserted correctly. See the last photo for an illustration of how it is supposed to fit. Please contact me if you have questions.