I just listed my KH29 on eBay. The auction includes the complete unicycle equipped with Kris Holm components and a Schwalbe Marathon Supreme tire plus the original WTB Stout 2.3.
The cycle only saw pavement riding and was never ridden in the dirt or wet.
The seat post length is the original stock length that it is was manufactured with
it has not been cut (assuming that was your question). If there is some variance in stock those lengths just let me know and I’d ne happy to remove and measure it for you.