I purchased some CDC yesterday and tied my first dry flies last night. I used the CdC for the post, and it did not feel right. I just watched some of the video in the link from Normands great thread below, and it looks like the post in one of the videos is a synthetic material. Wht would you guys use for making a post on a dry fly? Also, the tail was a painbrush material, would calf hair work on a dry?