Like: A nice smooth fitting seatpost.
Dislike: A newly installed seatpost that won't come out!

I have one of these now. Installed 2 days ago on my new C-Dale, but it won't work (too tall). So I went to pull it out to try a different one, up it came 2 inches and then it won't budge. It will twist side to side about 1/8th of a turn, but for the life of me it will extract no further. Any advice?