On a rally in Belgium some years ago we must have gone over a load of nails in the road. Many people had punctures as a result. Those who had the sealing goo inside their tubes found that their tyres went flat rather later than those without the goo - perhaps half a day or a day later. But they still went flat.
36 4G, 37 VH, 53 ex ISDT KHA (project), 54 KH(A), Healey 1000/4 (project)
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.