Got a rare puncture through my hefty Marathon Plus rear tyre a couple of weeks back. Looked like a wee cut clean through so repaired tube and carried on. Last week, got a second puncture in almost exactly the same place (right on the edge of previous patch, !) so I removed the tyre for a closer look this time.
It all looked fine, but clearly something was going on so I stuck a wee screw driver into the hole and felt something grate. After a bit of digging I removed a 4mm chunk of glass.
I may have made the hole a wee bit bigger on the outside getting the glass out. Should I keep running it or am I asking for trouble?
(Also discovered one of my spare 700/35ish tubes has a Dunlop valve if anyone wants it.)