I have a boy I am currently showing. He is my first show dog, and my first dog. He stacks and gaits amazingly but just wont hold up his nub. It also makes his rear looked very rounded when he won't and doesn't help him. (He really does have a good rear though) I have tickled his tail, treated him, and everything but his nub won't stay up. (He also has a shorter dock.) If anyone has any advice please help.