Just put a new set of boots on the 449, took an hour and a half to remove wheels from bike swap tyres and reinstall wheels on bike, it's getting easier, slightly, and i don't think i will break any records, but definately comfortable changing my own tyres now.
I might actually be usefull as a sweep at the HCR
well the HCR is the place to be if you like practicing your tyre changing while the owner of the bike looks at you and says "rear wheel spanner?"