Trying to use the DT tutorial ear posting method. I've twisted, pushed, held the post down, pulled the ear up high to adhere it to the post and no matter how hard I try my6 mo pup can shake the base of the post out of her ears within seconds. Is is possible that depending on the nature of the cropping that there isn't enough ear left down low to hold the darn post in? Is she just a talented shaker? Any suggestions on keeping the post anchored in the ear?