I had a spare twenty minutes this afternoon so I got the longstanding slow puncture cured. It was the usual problem with older alloys, corrosion around the rim edges causing a poor seal and giving me a tyre that needed pumped up every fortnight. I've lived with it for six months, now the pain over, at least until the next re-occurrence. I also indulged in the "what alloys would I buy if I had a spare £300" fantasy as I browsed around the waiting area. I settled for a quote for two new front tyres, sometime next month I'll do the business.