I saw your post and couldn't resist commenting on it. While I no longer have Curlies, I grew up riding and raising a trio of them.
My personal mare was a registered straight haired curly. Every spring she experienced some trouble breathing and when I had her tested for allergies it came back positive for around 30 different things. The vets office couldn't believe it. She was allergic to everything from cotton to grain, grass, and a plethora of other things. It was a nightmare. Between her and the other two I never had much luck with the breed. I now have two Quarter horses and am convinced their the best breed ever.
Good luck with your curly. I hope you have a better experience than I did with the breed. FYI - you might want to check out the associations newsletter's from the mid 1990's. They provide an amusing read.