Thanks. We were staying at Poston Mill about 10 miles from Hereford and despite my temporary fix the cold tap was still spluttering as the pump was sucking in air so I decided to make the 20 mile round trip to Halfords in H’ford. Of course they didn’t have much of a selection and the wrong sizes too. The motor factors place next door couldn’t help either so eBay to the rescue. New ones fitted and I used some silicone spray to lube the grooves and seals before fitting. I’ll also lube the housing prior to fitting.