I have a black and gold Emperor with a bad repair on one of his wings a missing horn and he is quite dirty. The repair is firmly set and I’m afraid I’ll damage him further if i try to remove it. I’ve seen techniques to soften old glue that was used on porcelain but I’m not sure if it would work on gypsum. He also needs a good cleaning and lost most of his luster, I’m assuming from age. Water alone doesn’t seem to do much but I’m reluctant to do a chemical cleaning trial and error with him. I’m hoping some of the more seasoned Windstone people can help!