We’ve been using the feeder for about half a month and there has been almost zero food waste or spillage. I would say that it is an incredible improvement to almost 70-80% spillage from the old feeder to basically 1% spillage NO JOKE. You should definitely try it out! As for changes, I kind of modified mine from the original, like I didn’t do the openings as tall I did them a bit more wide so that two birds can eat from one access hole at once, so with mine, four birds could eat at once instead of two.