RE: GP Patty 300S or H9 27% Extra 260?
Do any of the models from here fit your needs? My knowledge of big birds is almost nil but I thought this might be of some help to you. Also, I've have no first hand knowledge of their quality or customer service. You never know, good luck.
[link]http://www.peakmodel.com/index.php?main_page=index&cPath=1&zenid=0545fee7490cb7b2f4b9b03a8e55cc27[/link]