The seat post I received was utter junk! the seat clamp was very crudely made and you couldn't fit a saddle on it. I got a lightly used genuine 30.9 s-works 10mm layback from ebay, I really like the single bolt adjustment on them, I also got a genuine seat post clamp S184700003 the one supplied was like cheese when torqued to 4nm, are you going to put up a build photo