Attempt #1 fail today...Got the Viner out of the garage, front tyre was soft...got the track pump out, restored it to usual pressure, set off. 17 or so miles later, it goes soft again…Pump it up again, rapidly deflates again. Obviously a slow leak. I'm not going to bother trying to fix it there and then- tyre's a Durano Plus, and a pig to put on and off even if I was expert in puncture repair (I'm not, simply because I average over a year between visits..). Limp round to the nearest station & then home. Get a new tube out- which inflates fine out of the box- and new tyre as the D+ has done quite a few miles anyway. Tyre won't inflate properly. Bork valve trying to sort this. New tube, again inflates fine...then doesn't in situ. ****!! No idea what's causing the problem, will let LBS have a look. Never mind, time enough (and a week off in a fortnight as well).