I took part in the Ports Hills MTB enduro on saturday - four timed stages over a mixed cross country/downhill course. My ungrateful XC steed spat me off near the end of the second (downhill) stage, and I sprangled my left shoulder. Grade 1 AC joint dislocation, a broken rib and a smashed bike helmet. The bas***d bike of was uscathed of course. My wife even made some disparaging comment about an old guy like me trying to keep with fearless young men on hard core full suspension downhill bikes. Go figure!