I need to find 2 new seat posts and I seem to have an unusual request that it allow me to tilt the nose down. I have three bikes, a Trek 1100, a Mongoose RX100 and a Giant TCR (c2?). Only the Giant has a post that allows me to tip the nose down but it's carbon fiber. I need this for my brooks saddles which I prefer very nose down. These posts will be replacing the Trek & Mongoose posts (neither of which are carbon fiber), any suggestions?