Nice riding James, too bad I cant hear the rear Hadley hub I sold ya buzzing the whole way down :) Like the songs though!

Its normal, it the travel spacer moving around that makes that noise. If you remove it the noise will go away and your fork will be 170mm rather than 160mm. Anyways when the fork is on a bike that noise disappears. You have one of the newer Lyriks (2010 or 2011) right cause the older ones are only 160mm and should not make that noise cause they don't have travel spacers!

The Giro Xar does not replace the Xen. The Xen is still in their 2011 catalogue. I personally prefer the look of the Xen!