Right, just fitted my new valve and as the churchill dog says "ooooooooooooh yeeeeeeeeeesssss!"
New and old. (hole on old green one, bottom left)
Car now pulls like it did when I first put the bluefin on. Mine had one pretty big hole in it as you can see from the pics. (held open with allen key!)
I did not remove any wheels or covers or trays to access the valve. Maybe mine are missing?
I did however use the pit at my parents house. (left over from the old stock car days) Pretty awkward to get to the top bolt but if you persist you will be fine!
One allen key and some tread lock - job done.
well under an hour and I wasn't sure where it was!
With Valve off.
New valve on. (tried to show it in relation to the front drivers wheel)
HTH