I'm glad you found the tic and hope that solves your problems. You def. need to watch the ears, especially during the spring and fall (allergy season) and should try to clean them frequently.
Mulligan has a similar coat issue. We recently adopted him and are hoping that having him on a premium food will help. Daily brushing and a few baths (first one because he was stinky, second with flea shampoo because we found those pesky buggers) have already helped to soften his coat and he's been home just short of two weeks. He still has doggy dandruff, but again, we're hoping that with the proper care (good food, baths, brushing, etc.) it will work itself out. We have a vet visit on Monday so we'll see what they say.