Keep digging, sunshine, keep digging. And when you can no longer see daylight, perhaps you can let us all know how you managed to pump up a tyre with no valve core, and another tub with a hole worn through it. I'm sure we'd all be intrigued to find out.
There isn't a hole right though it and i used of of the other valve cores.
I sold two lots of the tubs and the other chap didn't seem to complain, maybe Dick should buy his tubs from a shop in future
I'm not going to get in to particulars, as your argument is fundamentally flawed; you can't claim to have pumped up all of the tyres and them all hold air "for a week" when one doesn't even have a valve core and another has a hole in!
Keep digging, sunshine, keep digging. And when you can no longer see daylight, perhaps you can let us all know how you managed to pump up a tyre with no valve core, and another tub with a hole worn through it. I'm sure we'd all be intrigued to find out.