I don't know what is going on with Bianchi but several friends of mine that have ordered new bikes well over a year ago have been waiting for delivery with no confirmed date. It seems to be a parts shortage as one of them were told that they could get the Bianchi frame but no parts for it. Weird. I would suggest that you be better off looking for another similar type of post that uses the same clamping style & hi-jack the parts off of that or just simply replace the post entirely with a new one. I don't think you'll have much luck with Bianchi.