Was flying downhill in the velomobile when one of my front tires blew with a loud bang. Discovered the nicely wrapped up spare tube in the flat kit supplied by the guy I got the bike from was ancient with old patches that look like they had 5,000 miles on them. What an idiot I am for not carefully inspecting them or just replacing them with new tubes without even looking.
So of course the replacement tube had leaks. One of the holes was on or very close to an old patch so I couldn't re-patch it with the vulcanizing patches I had. Spent like three hours on the side of the road trying to fix up the tube I was riding, which had like six holes in it. Part of my problem was I supposed to let the "glue" dry before putting on the patch. No wonder it wasn't working well.
Finally someone rode by and kicked me down a couple of old "glueless" patches which let me fix the remaining two leaks and got me back on the road. Cut my ride short and stopped at the bike shop on the way back for some new patches and tubes.
Still, a bad day riding is better than a good day trolling on RIU.