I recently (about a month ago) took in a female Redfoot tortoise. My prior keeping experience has been with Russians. The Redfoot has a couple of dry spots on her shell. She came to me this way... The spots do not seem to be getting worse...but they don't seem to be getting better either. The spots are firm to the touch and small pieces flake off...almost like it's shedding. I've had some issues keeping her enclosure at 80% humidity, but it is usually above 60% and her diet is some fruit, mostly greens, and a calcium supplement once a week or so. I also mist her and the enclosure down well in the morning and evening (cypress mulch) and she is soaked almost daily. She's VERY active, a good eater, and self-soaks often in a large casserole dish I keep half filled with water in her enclosure. Are these dry spots normal, or something I need to be concerned with? If I can treat them...any suggestions would be appreciated.