Does fixing a puncture count? On a recumbent? When you are half way through a gentle 25 miler as part of a programme to recover your 'bent legs after 3 months driving and training around Australia? When the rural roads are filthy, the bike is filthy, it's drizzling and getting dark? And it's the rear, and you can only lay the bike on its side in the wet grass at the side of the road, not turn it upside down like a DF bike, so it's a wrestle to get the chain etc. clear of the wheel? And it's a Marathon Racer? And it's a bit of wire that refuses to be pushed back out the way it came, and everything's wet, covered in muck, and it's getting dark? But at least it only took me 20 mins: the guy whose house I was outside came out to offer me his garage (which I declined as moving a wheel-less 'bent is not as simple as it sounds), a passing roadie offered help, and as I was clearing up a guy with his family in a car stopped to offer help. 3 offers of help in 20 mins - restores your faith in the human race.