Quote Originally Posted by Grits View Post
I followed someone's advice in a post about positioning the valve on top so that I am pulling down on the pump thingy .
Tried this when I pumped up the tyres tonight and it did seem to work better. It was easier to get the pump to attach and then when I finished pumping, it was just a quick pull down and it released. Having said that, I will possibly go downstairs in a minute and find both tyres flat.

Can anyone tell me why the difference? Why is there not one universal valve (and of course that one would have to be Shrader)?