Colin_P
Guru
Then you put it in the frame and close the QR. It moves a namometre and changes from "just so" to "too tight".
Forgot about that and it can be quite significant!
I once limped home with a snapped axle with just the skewer holding it together and in place. The power of the skewer cannot be under estimated.
Another one I've just thought of is carefully lining the wordy printed bit on your tyre up with the valve only to find it has moved way out of alignment once you have put the wheel back on and pumped it up!