I am shocked for you!It's been 7 years since I started using them, 3 years since I stopped carrying a puncture repair kit, but today I have been let down......................just like my tyre. Went to the garage to get my hybrid out for my shopping and, my M+ front is flat. Shook me rigid it did.
The entire history is:I recall @srw reporting a puncture (indeed, if I recall, possibly a gash or a rip) in an M+ a couple of years ago. This is becoming a worryingly common occurrence.