This is a nice coincidence. A month ago I switched my birds from Zupreem Fruit Blend (yuck, look at the ingredients) to Harrison's High-Potency Fine, mixed with Totally Organics Pellets.
To be quite honest, I think I'm going to buy the Coarse myself next time because the fine pellets are REALLY fine. They look like parakeet food to me. It does save a lot of waste, but they don't eat with their feet and I do feel that they didn't like it because of their size at the beginning. So, I think you are right on with getting the Coarse.
How long have you been trying to convert? It takes about a week to convert an older bird, and a few days at least to convert the younger ones like our Sun Conures.
My Sun Conure converted rather quickly, however. She immediately took to the Totally Organics Pellets, but took a few days for the Harrison's. I was told that Birds take to Totally Organics quickly because of its high quality, no-supplementation ingredients, and it was certainly the case here with my Sun. However, now that she is completely converted, she doesn't like the TOPs as much as the Harrisons.
I used the hand-feeding technique combined with the one listed in the site linked below. This is also the method I used to first convert her from seeds to Zupreem Pellets the first week that I got her. It is written to convert from seed to pellets, but of course it works for converting from pellets to better pellets, too. I will simply paste you the link as it is well written enough, here:
http://www.parrot-and-conure-world.com/ ... llets.htmlMy GCC took a while longer. He was resisting all my attempts at conversion, including hand-feeding, but I finally got him to do it my modeling it off my Sun Conure with this technique, combined with a reward system that he is familiar with already from trick training:
viewtopic.php?f=8&t=6587&p=44489&hilit=tricked+in+to+eating+harrison#p44489Since I still have quite a bit of Zupreem left, I tried to feed it to both of them in half/half quantities, and they now no longer even want to touch that shit. I guess the know what's best for them.
Good luck!