Just a note on the "arse" thing: I started throwing in a longer ride ever week and even though I was still riding my usual 20 mile rides, the long rides caused my site bones to feel bruised. I finally tried moving my saddle forward a bit and I concentrated on sitting back in the saddle on one ride and this seemed to help. Then I layed off for several days and got back on the bike Friday only to have the discomfort return again. I finally realized that the shorts I was wearing on that day had very little padding. When I road the next day with my thicker shorts the ride was much more comfortable. I'm 50 and I have very little body fat, so I guess I might need the extra padding.